Getting Started with Berkeley DB
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Getting Started with Berkeley DB

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11/9/2005

Table of Contents

Conventions Used in this Book

1. Introduction to Berkeley DB

About This Manual

Berkeley DB Concepts

Access Methods

Selecting Access Methods
Choosing between BTree and Hash
Choosing between Queue and Recno

Database Limits and Portability

Environments

Exception Handling

Error Returns

Getting and Using DB

2. Databases

Opening Databases
Closing Databases
Database Open Flags
Administrative Methods
Error Reporting Functions
Managing Databases in Environments
Database Example

3. Database Records

Using Database Records

Reading and Writing Database Records

Writing Records to the Database
Getting Records from the Database
Deleting Records
Data Persistence

Database Usage Example

4. Using Cursors

Opening and Closing Cursors

Getting Records Using the Cursor

Searching for Records
Working with Duplicate Records

Putting Records Using Cursors

Deleting Records Using Cursors

Replacing Records Using Cursors

Cursor Example

5. Secondary Databases

Opening and Closing Secondary Databases

Implementing Key Extractors

Reading Secondary Databases

Deleting Secondary Database Records

Using Cursors with Secondary Databases

Database Joins

Using Join Cursors

Secondary Database Example

Secondary Databases with example_database_load
Secondary Databases with example_database_read

6. Database Configuration

Setting the Page Size

Overflow Pages
Locking
IO Efficiency
Page Sizing Advice

Selecting the Cache Size

BTree Configuration

Allowing Duplicate Records
Setting Comparison Functions

List of Examples

2.1. MyDb Class
3.1. VENDOR Structure
3.2. InventoryData Class
3.3. example_database_load
4.1. example_database_read

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