Examining Index Usage
  • References/Database/PostgreSQL/Indexes

Although indexes in PostgreSQL do not need maintenance or tuning, it is still important to check which indexes are actually used by the real-life

2025-01-10 15:47:30
CREATE SCHEMA
  • References/Database/PostgreSQL/Commands

NameCREATE SCHEMA -- define a new schema Synopsis

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isn
  • References/Database/PostgreSQL/Appendixes/Additional Supplied Modules

The isn module provides data types for the following international product numbering standards: EAN13, UPC, ISBN (books), ISMN (music), and ISSN

2025-01-10 15:47:30
Catalogs: pg_largeobject_metadata
  • References/Database/PostgreSQL/Internals: Catalogs

The catalog pg_largeobject_metadata holds metadata associated with large objects. The actual large object data is stored in

2025-01-10 15:47:30
CREATE VIEW
  • References/Database/PostgreSQL/Commands

NameCREATE VIEW -- define a new view Synopsis

2025-01-10 15:47:30
Data Consistency Checks at the Application Level
  • References/Database/PostgreSQL/Concurrency Control

It is very difficult to enforce business rules regarding data integrity using Read Committed transactions because the view of the data is shifting with each statement, and

2025-01-10 15:47:30
Internals//Physical Storage: Initialization Fork
  • References/Database/PostgreSQL/Internals/Physical Storage

Each unlogged table, and each index on an unlogged table, has an initialization fork. The initialization fork is an empty table or index of the appropriate type. When an unlogged

2025-01-10 15:47:30
Catalogs: pg_user_mappings
  • References/Database/PostgreSQL/Internals: Catalogs

The view pg_user_mappings provides access to information about user mappings. This is essentially a publicly readable view of

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Internals//GiST Indexes: Built-in Operator Classes
  • References/Database/PostgreSQL/Internals/GiST Indexes

The core PostgreSQL distribution includes the GiST operator classes shown in Table 61-1. (Some of the optional

2025-01-10 15:47:30
Binary Data Types
  • References/Database/PostgreSQL/Data Types

The bytea data type allows storage of binary strings; see Table 8-6. Table 8-6. Binary

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