1.3.1 Logical Architecture of a PST File

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The PST file structures are logically arranged in three layers: the NDB (Node Database) layer, the LTP (Lists, Tables, and Properties) layer, and the Messaging layer. The following diagram illustrates the logical hierarchy of these layers, and what abstractions are handled by each layer.

Logical layers of a PST file

Figure 1: Logical layers of a PST file