Data Sources Supported (SSAS Tabular)
This topic describes the types of data sources that can be used with tabular models.
Supported data sources for in-memory models
You can import data from the data sources in the following table. When you install SQL Server Data Tools (SSDT), setup does not install the providers that are listed for each data source. Some providers might already be installed with other applications on your computer; in other cases you will need to download and install the provider.
|Access databases||Microsoft Access 2010 and later.||.accdb or .mdb||ACE 14 OLE DB provider|
|SQL Server relational databases||SQL Server 2008 and later, SQL Server Data Warehouse 2008 and later, Azure SQL Database, Azure SQL Data Warehouse, Analytics Platform System (APS)
Note that Analytics Platform System (APS) was formerly known as SQL Server Parallel Datawarehouse (PDW). Originally, connecting to PDW from Analysis Services required a special data provider. This provider was replaced in SQL Server 2012. Starting in SQL Server 2012, the SQL Server native client is used for connections to PDW/APS.
|(not applicable)||OLE DB Provider for SQL Server
SQL Server Native Client OLE DB Provider
SQL Server Native 10.0 Client OLE DB Provider
.NET Framework Data Provider for SQL Client
|Oracle relational databases||Oracle 9i and later.||(not applicable)||Oracle OLE DB Provider
.NET Framework Data Provider for Oracle Client
.NET Framework Data Provider for SQL Server
|Teradata relational databases||Teradata V2R6 and later||(not applicable)||TDOLEDB OLE DB provider
.Net Data Provider for Teradata
|Informix relational databases||(not applicable)||Informix OLE DB provider|
|IBM DB2 relational databases||8.1||(not applicable)||DB2OLEDB|
|Sybase Adaptive Server Enterprise (ASE) relational databases||15.0.2||(not applicable)||Sybase OLE DB provider|
|Other relational databases||(not applicable)||(not applicable)||OLE DB provider or ODBC driver|
|Text files||(not applicable)||.txt, .tab, .csv||ACE 14 OLE DB provider for Microsoft Access|
|Microsoft Excel files||Excel 2010 and later||.xlsx, xlsm, .xlsb, .xltx, .xltm||ACE 14 OLE DB provider|
|Power Pivot workbook||Microsoft SQL Server 2008 and later Analysis Services||xlsx, xlsm, .xlsb, .xltx, .xltm||ASOLEDB 10.5
(used only with Power Pivot workbooks that are published to SharePoint farms that have Power Pivot for SharePoint installed)
|Analysis Services cube||Microsoft SQL Server 2008 and later Analysis Services||(not applicable)||ASOLEDB 10|
(used to import data from Reporting Services reports, Atom service documents, Microsoft Azure Marketplace DataMarket, and single data feed)
|Atom 1.0 format
Any database or document that is exposed as a Windows Communication Foundation (WCF) Data Service (formerly ADO.NET Data Services).
|.atomsvc for a service document that defines one or more feeds
.atom for an Atom web feed document
|Microsoft Data Feed Provider for Power Pivot
.NET Framework data feed data provider for Power Pivot
|Office Database Connection files||.odc|
Supported data sources for DirectQuery models
DirectQuery is an alternative to in-memory storage mode, routing queries to and returning results directly from backend data systems rather than storing all data inside the model (and in RAM once the model is loaded). Because Analysis Services has to formulate queries in the native database query syntax, a smaller subset of data sources are supported for this mode.
|Microsoft SQL Server||2008 and later||OLE DB Provider for SQL Server, SQL Server Native Client OLE DB Provider, .NET Framework Data Provider for SQL Client|
|Microsoft Azure SQL Database||All||OLE DB Provider for SQL Server, SQL Server Native Client OLE DB Provider, .NET Framework Data Provider for SQL Client|
|Microsoft Azure SQL Data Warehouse||All||SQL Server Native Client OLE DB Provider, .NET Framework Data Provider for SQL Client|
|Microsoft SQL Analytics Platform System (APS)||All||OLE DB Provider for SQL Server, SQL Server Native Client OLE DB Provider, .NET Framework Data Provider for SQL Client|
|Oracle relational databases||Oracle 9i and later||Oracle OLE DB Provider|
|Teradata relational databases||Teradata V2R6 and later||.Net Data Provider for Teradata|
Tips for choosing data sources
Importing tables from relational databases saves you steps because foreign key relationships are used during import to create relationships between tables in the model designer.
Importing multiple tables, and then deleting the ones you don't need, can also save you steps. If you import tables one at a time, you might still need to create relationships between the tables manually.
Columns that contain similar data in different data sources are the basis of creating relationships within the model designer. When using heterogeneous data sources, choose tables that have columns that can be mapped to tables in other data sources that contain identical or similar data.
OLE DB providers can sometimes offer faster performance for large scale data. When choosing between different providers for the same data source, you should try the OLE DB provider first.