2. Architecture

This chapter explains the logical structure of an HADB database and how database access is processed.

Organization of this chapter

• 2.1 Types of tables

• 2.2 Base table types

• 2.3 Index types

• 2.4 DB areas (areas for storing tables and indexes)

• 2.5 Users and schemas

• 2.6 User authorization

• 2.7 Privileges

• 2.8 Database access method

• 2.9 Transaction control

• 2.10 Locking

• 2.11 Database recovery

• 2.12 Client-group facility

• 2.13 Centralized management of client definitions

• 2.14 Background-import facility

• 2.15 Chunk archiving function (compressing data in a chunk)

• 2.16 Retrieving data from CSV files

• 2.17 Searching text data

• 2.18 Audit trail facility

• 2.19 Multi-node function

• 2.20 Memory structure of the HADB server

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