Overview of Archive Objects
An Archive Object is a hierarchical relationship tree that you create based on a driver table. The Archive Object archives transactional records from the production database, based on the rules and selection criteria you created in the Archive Object. This topic refers to archiving as copying records from the production database to the archive database, and then deleting these records from the production database. You can create an Archive Object based either on the templates that are included in IDMF or on the discovery process.
|To use this topic, you must have experience in the maintenance and administration of the Microsoft Dynamics AX application and database. IDMF lets you create an Archive Object that defines a hierarchical relationship tree among the Microsoft Dynamics AX application tables. You can then apply rules to select records based on specific criteria. Records matching the selection criteria from the whole relationship tree in the Archive Object are moved from the production database to the archive database. Improper use of this framework can cause unexpected results, database corruption, and application downtime requiring full database and application recovery. Exercise extreme caution, and thoroughly test your recycling strategy in a test environment before working in the production environment.|
Overview of the data archiving process
The archive function archives records by using a scheduled archive task. At run time, an archive task completes these tasks:
- Select qualifying records from the driver table, based on rules that are defined for the driver table.
- Select qualifying records from all child tables, based on the parent-child relationship.
- Copy the qualifying records from the production database to the archive database.
- Delete the qualifying records from the production database.
Considerations for Archive Objects, driver tables, relations, and rules
Consider the following points when working with an Archive Object:
- Verify that the table you select as the driver table for an Archive Object is a header table, such as SalesTable. A good indication, although not always accurate, is that the TableGroup value for such a table is WorkSheetHeader, Miscellaneous, or Transaction.
- Tables with a TableGroup value of Main, Parameter, Group, and WorkSheetLine cannot be driver tables.
- The driver table becomes the root parent in the hierarchical relationship tree. IDMF queries the XRefTableRelation table to determine the parent-child relationships.
- Archiving records based on an Archive Object may cause data inconsistency in your application in these conditions:
- The driver table has known parent tables.
- The driver table has known child tables that are not added to the Archive Object as a relation.
- Always minimize the Archive Object, and keep only necessary relations and rules for your implementations. Consider removing a table from the Archive Object in these conditions:
- The table does not contain any data, and it is not likely to contain data in the future.
- The table stores only transient data, such as SalesParmTable or SpecTrans.
- The table stores open transactions, such as CustTransOpen or VendTransOpen.
- The table creates nested relationships. If a table appears multiple times on different levels in the relationship tree, with the same qualifying relationship condition or set of primary keys, consider keeping the occurrence only in the lowest-numbered level in the relationship tree.
- If a table is related to the driver table and makes its own Archive Object, it is a good candidate to be a driver table itself. For example, if you use SalesTable as a driver table, it discovers PurchTable for intercompany. In this case, consider making PurchTable a separate Archive Object. If the driver table and the child table are from different functional areas, and if the child table is a good candidate to be archived separately, create a separate, independent Archive Object. Consider making this child table a Related Archive Object in these conditions:
- This driver table and its child table must be archived together because of functional or relational dependencies.
- You have to add rules for correct archiving of the child table. You can only add rules for the driver table. To add rules for the child table, it has to be the driver table of a Related Archive Object. Be sure that the rules you add to the Related Archive Object do not adversely affect the archiving from the parent Archive Object.
- There may be multiple relationships between two tables. In that case, evaluate the relationships and functionality carefully. We recommend that you use only a single relationship in the Archive Object. However, you can use multiple relationships if necessary. Be sure to select a valid relationship using a unique index or primary key, if one exists.
- Do not use the archive templates that are included with IDMF to create your Archive Objects. These templates are created in a specific Microsoft Dynamics AX application and may not match your implementation. Instead, use the discovery option to create your own objects, and compare them with the templates. Tables in the templates may not be valid for your implementation. Some valid and known tables may not appear in your discovered object. Carefully analyze any difference between the objects you created through the discovery process and the templates, to determine the cause of the difference. Manually add or remove tables from the Purge Objects and Archive Objects to fit your requirements.
- Be sure that relationships among tables are set correctly. Be sure that the TableGroup property is set for all custom tables.
- Verify that the relationship tree that you have created in the Archive Object archives the intended data from your system. An Archive Object that you create must look at all related records. Missing relationships lead to orphaned data.
- A table in the relationship tree becomes part of the archive function and becomes disabled from the master data tables list.
|Thoroughly test the effect of your Archive Objects and your archive strategy on your database and application in a test environment that resembles your production environment. Test all business processes, and obtain user sign-off before trying to implement the Archive Objects in the production environment.|
Overview of Related Archive Objects
The relationship tree of an Archive Object can be very complex. In order to archive data from all the related tables, complex relationship trees have to be managed. In some cases, one relationship tree has to include another relationship tree to guarantee data integrity and functionally valid archiving of data. Due to this complexity, you can create a relationship between two independent Archive Objects by adding one Archive Object in the other Archive Object. The child Archive Object is called the Related Archive Object and forms a relationship with the parent Archive Object. An archive task archives selected records from all the tables in the Archive Object and the Related Archive Object. The following steps provide a walkthrough of an Archive Object with a Related Archive Object:
- Use the Microsoft Dynamics AX Windows client to work with the Application Object Tree (AOT). In the AOT, expand Data Dictionary > Tables > CustInvoiceSalesLink > Relations. Note that the CustInvoiceSalesLink table has two parents, SalesTable and CustInvoiceJour. Expand the Relations node for the CustInvoiceJour table. Note that the CustInvoiceJour table does not have a relationship with SalesTable in the AOT.
- In IDMF, click Configure > Archive templates/Archive Object > SalesTable to open the SalesTable Archive Object.
- Review the hierarchical tree, and understand the parent-child relationship. Notice that the CustInvoiceSalesLink table from step 1 is not in the relationship tree as a child of SalesTable, even though the AOT shows a relationship between the two tables. Notice that the relationship tree contains two oval shapes, named CustInvoiceJour and CustPackingSlipJour. These oval shapes represent Related Archive Objects for SalesTable. A Related Archive Object is an Archive Object that is part of the relationship tree of a parent Archive Object.
- Double-click CustInvoiceJour. Notice that the CustInvoiceJour Archive Object opens and shows the SalesTable in a green rectangle next to the root table, CustInvoiceJour. The green rectangle highlights SalesTable as the parent Archive Object of the CustInvoiceJour Archive Object. Note that the CustInvoiceSalesLink table is a child table of the CustInvoiceJour table. Double-click SalesTable to return to the parent Archive Object.
- Right-click CustInvoiceJour, and select View relation. In the Configure Related Archive Object window, review the relationship between the SalesTable and CustInvoiceJour tables, and then click Close to close the window.
- In the SalesTable Archive Object, right-click CustInvoiceJour, and select Remove. Confirm that the Related Archive Object CustInvoiceJour is removed.
- Right-click SalesTable, and select Add Related Archive Object.
In the Configure Related Archive Object window, follow these steps:
- In the Select Related Archive Object list, select CustInvoiceJour. Click New relation.
- In the Configure relations for Related Archive Object pane, enter SalesTable in the Relation name field.
- Enter a valid description in the Relation description field.
In the Configure relations pane, use the following table to select fields, and then click Add.
From the list Select the value Table name SalesTable Field name dataAreaId Condition = Related table name CustInvoiceJour Related field name dataAreaID
Click New Relation. Using the previous step, use the SalesID field to create a relationship between the SalesTable and CustInvoiceJour tables. Click Add.
- Verify that the SalesTable and CustInvoiceJour tables are related using the DataAreaId and SalesID fields.
- Click Save. Click OK. Click Close to return to the parent SalesTable Archive Object.
- Verify that the SalesTable Archive Object contains the CustInvoiceJour Related Archive Object.
- Click Save. In the Save as dialog box, type SalesTable_a, and then click Save. Click OK to continue. You must save an Archive Object with a new name.
- Click Properties on the upper-right side of the relationship tree workspace, and pin the Properties window to the workspace. In the relationship tree, right-click the Related Archive Object CustInoviceJour, and then click Remove. In the Properties window, click Revert. The revert action reverses the changes you have made since the last time you clicked Save. The revert action here brings back the Related Archive Object CustInvoiceJour, because you did not click Save after you removed the Related Archive Object.
- Remove the Related Archive Object CustInvoiceJour again. Save the Archive Object as SalesTable_deleted.
- On the toolbar, click Archive templates/Archive Object. Compare the icon of the SalesTable Archive Object with other objects in the list, and notice the difference. The icon indicates that you have opened the default template and saved it as an Archive Object. You can only use an Archive Object, and not an archive template, in an archive task. Click SalesTable. Notice that IDMF opens the Archive Object you just saved as SalesTable_deleted. IDMF lets you save multiple versions of the Archive Object and uses the most recently saved version of the Archive Object.
- On the toolbar, click Show versions. In the Version history window, select SalesTable in the Archive template list. Notice that the Archive Object list displays the different versions of SalesTable, with the most recent version at the top. An archive task uses the most recent version of the Archive Object.
This walkthrough explained the concept of including a Related Archive Object in an Archive Object. You must understand the Microsoft Dynamics AX metadata and functionality thoroughly before working with an Archive Object or including a Related Archive Object in a parent Archive Object.
Understanding the Archive Object exception list
IDMF lets you create an exception parameters list as detailed in a later section of this topic. The exception parameters list applies globally to all purge templates, Purge Objects, archive templates, and Archive Objects. In addition to the exception parameters list, IDMF lets you maintain an exception tables list specifically for Archive Objects. When you create a new Archive Object and select the driver table, IDMF displays the Archive Object exception tables window. The exception list contains tables that you can use as driver tables to create a separate and independent Archive Object. Carefully evaluate these tables to determine whether you want to include them in the relationship tree as related child tables or as Related Archive Objects. The discovery process ignores all tables in the Archive Object exception tables list and does not include them in the relationship tree, even if a relationship exists. To include a table from the Archive Object exception tables list, deselect the table, and click Save before you click Continue to begin the discovery process. In this case, the discovery process includes the deselected table if a relationship exists. You can also add other tables to the list and select to exclude the newly added table from the discovery process.
Navigation of the Archive Object exception tables window
The following tables provide descriptions for the controls in this window.
Pane Description Main window Provides the driver table, and a list of exception tables for this driver table. The list of exception tables changes, depending on the driver table. Add new exception table Provides controls to add a table to the exception tables list.
Buttons (main window)
Button Description Save Save the changes to the exception tables list, such as change to the Status field and any added tables. Continue Continue with the discovery process for the Archive Object.
Buttons (Add new exception tables pane)
Button Description Add Add the selected table to the exception tables list. You must select a table in the Table name list before you click Add. Clear Clear the Table name list.
Fields (main window)
Field Description Table name The name of the driver table. Exception tables The names of the exception tables. Each table in the list can become a driver table. Status A table with the Status field selected is not added to the relationship tree during the discovery process, even if a relationship exists. If the Status field is not selected, the table is added to the relationship tree if there is a relationship. Modified by The Windows ID of the user who changed the status of an existing table or added a new table to the list.
Fields (Add exception list)
Field Description Table name Select the table that you want to add to the exception tables list.
Create a new Archive Object
You can create an Archive Object by selecting a driver table and creating a relationship tree based on the driver table, instead of selecting a template that is included with IDMF. Follow these steps to create a new Archive Object:
- On the toolbar, click Create Archive Object.
- In the Create Archive Object dialog box, select a table from the Driver table list. The list excludes tables from the exception parameters list, which is covered later in this topic. Navigate to and select WMSOrder. A driver table is the parent table that defines the relationship tree for a specific Archive Object. In an Archive Object, the driver table may have child entities but does not have a parent entity in the relationship tree.
- To continue, you must select the most unique index for the table. This index is used to create the parent-child relationship in the Archive Object. In the Unique keys field, select orderid. The WMSOrderIdx index is created by using the orderid field.
- Click Discover. In the Archive Object exception tables dialog box, review the exception tables list carefully. If you want a table from the list to be included in the relationship tree, clear the Status field. Use the Add new exception table pane to add a new table to the list. The Status field for the newly added table is selected by default. Click Save to save your changes in the Archive Object exception tables window. Click Continue to start the discovery process and create the Archive Object. Note: The Administer > Discovery command lets you maintain an exception parameters list. A table that belongs to the exception parameters list, with Archive discovery selected, is excluded from the relationship tree when the Archive Object is created, even if there is a relationship between the driver table and the excluded table.
Using the metadata that is imported from the Microsoft Dynamics AX database, the exception parameters, and the Archive Object exception tables list, IDMF generates a hierarchical relationship tree. The relationship tree starts with the driver table, in level 0, and creates a hierarchy of parent-child relationships. Make sure that your Archive Object resembles the following screen shot. Do not save the Archive Object.
The relationship tree in this Archive Object is five levels deep. Level 0, the topmost level, contains the driver table, WMSOrder. Level 1 contains the child entities of the driver table. Level 2 contains child entities of tables in level 1. The last level, level 4, contains the child entities of tables in level 3. This relationship tree is created based on the following data:
- The Microsoft Dynamics AX metadata. The discovery process uses the metadata to create a list of related tables that form the parent-child hierarchy based on the driver table.
- The exception parameters. Tables that belong to the exception parameters list are filtered out of the relationship tree. Use the Administer menu to configure the exception parameters.
- The tables listed in the Archive Object exception tables dialog box. The tables you selected in this dialog box are also filtered out of the hierarchical relationship tree.
Caution Tables that you configure as master tables by clicking Administer > Master data tables are replicated from the production database to the archive database by a master data synchronization task. The relationship tree created by the discovery process may include tables that are configured as master tables. Verify the tables in the relationship tree, and remove any tables that must be treated as master tables. Right-click the table, and select Add to data replicate to remove the table from the relationship and configure it as a master data table. If you do not remove these tables, tables in the relationship tree are automatically removed from that master data synchronization list when you save the Archive Object.
Verify the relationship tree, and assess the functional effect of the tree on your Microsoft Dynamics AX application. As a result of your assessment, you may have to manually add, modify, or remove some relations and rules. For example, click Show versions to display the Archive Object from the default template that is included with IDMF. Compare the relationship tree from the template with the relationship tree you created in the previous procedure. The relationship tree in the WMSOrder archive template differs from the WMSOrder Archive Object you created. The difference is caused by the modification made to the default template, based on the functionality assessment of the Microsoft Dynamics AX application. As demonstrated by this walkthrough, an Archive Object you create through discovery may not match the default template that is included with IDMF. Be careful with your selection of the driver table. If you select a table such as ProdTable, the relationship tree can go many levels deep, spanning many tables on each level. Such an Archive Object creates a complex relationship tree and increases the potential for error, and for resulting data corruption and application downtime.
The default template that is included with IDMF may not match the metadata of your Microsoft Dynamics AX implementation. A table in the default template that is not found in the metadata from the production database is marked invalid. An invalid table appears with a dotted red border, as shown in Figure 2. You must remove invalid tables. When you use fields from valid tables to create relations and rules, IDMF validates those fields. A field with a disabled configuration key is considered invalid. A valid table with invalid fields is shown with a yellow dotted border. You must either remove valid tables with invalid rules from the relationship tree or fix the relationships before you can save the Archive Object.
Navigation of the Create Archive Object workspace
The following tables provide descriptions for the controls in this workspace.
Pane Description Relationship tree pane Provides a graphical view of all the tables in the Archive Object. The following list provides controls and commands that you can use to navigate the relationship tree pane:
- With the Level slider, you can select a level and show only the tables at the selected and higher levels.
- With the Zoom slider, you can change the diagram size.
- Right-click the driver table to work with the following commands:
- Click Add Related Archive Object to add a Related Archive Object.
- Click Remove all invalid tables to remove all invalid tables, together with all their related tables, from the nested hierarchy.
- Right-click a child table to work with the following commands:
- Click Remove to remove the selected table from the level, and to remove its nested child tables from the hierarchical tree. For example, the SpecTrans table appears in level 2 and level 3. If you right-click the table in level 2, and then select Remove, the table is removed from level 2, together with its nested child relations. The occurrence of the table remains intact in level 3.
- Click Select all occurrences to display all occurrences of the selected table and its related tables in a dotted green border. In this case, the table SpecTrans is selected in levels 2 and 3, together with all its nested child relationships.
- Click Remove all occurrences to remove all occurrences of the selected table and its related tables. In this case, the table SpecTrans is removed from levels 2 and 3, together with all its nested child relationships. The removed tables appear in a gray shape with a solid red border.
- Click Add to data replicate to remove the selected table from the relationship tree and add it to the master tables list. This command performs these tasks:
- Remove the selected table, together with all its nested child tables, from the relationship tree of all existing Archive Objects and archive templates.
- Add the selected table to the Recommended tables tab in the master data tables list (Administer > Master data tables).
- Click Discover to regenerate the hierarchical parent-child relationship for the selected table. This command is available only when you select a table with the table group property of WorkSheetHeader.
Note A table with the symbol X in the top-right corner meets the row size or table size configuration in the Framework options window (Administer > Framework options). Review these tables carefully to determine whether such tables have to be removed from the relationship and added to the master data tables list (Administer > Master data tables). To add a table to the master data tables list, right-click the table, and then select Add to data replicate. Properties Shows properties for the selected table and provides commands that you can use for the selected table.When a table in the Archive Object contains multiple relations, you can use the Relations node in the tree view to disable one or more relations, as detailed later in this section. Remove table Provides a data grid that you can use to select tables that you want to remove from the relationship tree. This pane also provides an Advanced filter control that you can use to filter the data grid. Related Information Provides additional information for some of the tables. If related information is provided, read it carefully to understand the archive relevance of the table.
Button Description Remove Remove tables that are selected in the data grid in the Remove table pane. When you remove a table, all the child tables for the selected table are removed. The removal spans the whole relationship tree, and all nested parent-child relations for the selected table's child tables are removed. Revert Reverse the modifications made to the Archive Object, back to the last save. This resembles an "undo" command. Show allShow selected Show all tables or selected tables, and toggle the label of the button. Removed tables appear in gray boxes with a solid red line around them.
Fields (Remove table pane)
Field Description Check boxes Select tables that you want to remove from the relationship tree. Table name The name of the table. Configuration key The configuration key of the table. Level The level of the table in the relationship tree. Row count The number of rows in the table.
Walkthrough: Work with an Archive Object
This section provides a walkthrough for working with an Archive Object.
- If you have not created the Archive Object already, create one. On the toolbar, click Save. In the next dialog box, read the warning message carefully, and then click Yes. In the Save as dialog box, enter WmsOrder1, and then click Save. Click OK.
- Click the WMSOrder table in the hierarchy diagram.
- Use the Zoom slider to change the diagram size so that you can read the table names easily.
- In the relationship tree, move the mouse pointer over table WMSOrder to see the information that is displayed in the tooltip. In the relationship tree, move the mouse pointer over the 1:N relationship description above the WMSOrderTrans table to see the information that is displayed in the tooltip.
- In the Properties pane, expand each node in the tree view to see the information that is provided.
- If the Advanced filter control does not show the selection criteria, click the Advanced filter arrow. Type 1 in the Level field, and then click Search. This changes the grid to show only those tables that are in level 1.
- Select the WMSOrderTrans table by selecting the check box next to it.
- In the Properties pane, click Remove. Note that table WMSOrderTrans and all its child tables in levels 2, 3, and 4 are removed.
- Click the Show all button in the Properties pane. The diagram shows all the tables, with the removed tables in red lines.
- Click Revert to restore the original Archive Object. The diagram now reverts to the state it was in before you deleted WMSOrderTrans in step 8.
- Repeat steps 7, 8, and 9 to remove the tables again. All the removed tables appear in gray shapes with solid red lines.
- Click Show selected in the Properties pane to see the revised Archive Object. Verify that the removed tables are not in the Archive Object.
- On the toolbar, click Save. Click Save in the dialog box to save the Archive Object with a new version. You must provide a unique name when you save an Archive Object. IDMF treats the saved Archive Object as a new version of the original Archive Object or archive template.
- On the toolbar, click Archive template/Archive Objects, and then click WMSOrder.
- Verify that the Archive Object diagram does not contain the tables you removed in step 11. Switch between Show all/Show selected to confirm that the removed tables still appear in gray shapes with solid red lines.
- In the Properties pane, click Revert. The Archive Object does not change. The revert action cannot undo the changes, because the Archive Object has been saved.
- On the toolbar, click Show versions. In the Version history dialog box, select WMSOrder from the list, and select the version of the Archive Object in the Archive Object list. Each version of the Archive Object is saved with a unique name. Therefore, each Archive Object in the list provides a different version of WMSOrder.
- Select the last item in the list, WMSOrder, and then click Show to restore the Archive Object to the first version that is included as the archive template in IDMF. The restored Archive Object differs from the Archive Object you started working with in step 1. The relationship tree in the default archive template has been adjusted based on the functional assessment of the Microsoft Dynamics AX application.
- On the toolbar, click Save. Click Yes to overwrite the object. In the Save as dialog box, enter the name for the Archive Object, and then click Save. Click OK to close the message indicating the success or failure of the save operation. Keep the Archive Object open, because it is also used in the next section.
Archive templates/Archive Object
This command provides a list of archive templates and Archive Objects in your system. An archive template is a template that is included with IDMF with a predefined relationship tree. You can use an archive template as a starting point to create an Archive Object. You must review an archive template to make sure that it meets your requirements, and save it before you can use it in a scheduled archive task. This command uses the same navigation and toolbar commands as the Create Archive Object workspace.
Walkthrough: Work with an archive template
This section provides a walkthrough for working with an archive template.
- On the toolbar, click Archive templates/Archive Object. Observe the icon of the BankChequeTable template.
- Select BankChequeTable from the list.
- Review the tables, table properties, and relationship tree to understand how the data archiving for BankChequeTable cascades through the relationship tree in the archive template. Make sure that this relationship tree covers your application and any customizations you may have made to the Microsoft Dynamics AX application.
- On the toolbar, click Save. You must provide a unique name when you save an Archive Object. Change the name to BankChequeTable_object to identify this saved object as an Archive Object. Click Save.
- Click OK in the dialog box to continue.
- On the toolbar, click Archive templates/Archive Objects. You do not see BankChequeTable_object in the list. Unlike Purge Objects, Archive Objects are saved with the same name, but with a new version. In this case, the BankChequeTable object is created with a version name BankChequeTable_object. As always, the latest version is effective.
- Notice that the icon of BankChequeTable is changed compared to earlier, which indicates that it is saved as an object.