Library Version 18.1.40

Preface
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## Preface

Welcome to Berkeley DB (DB). This document introduces Berkeley DB 18 Release 18.1, which provides DB library version 18.1.40.

This document is intended to provide a rapid introduction to the DB API set and related concepts. The goal of this document is to provide you with an efficient mechanism with which you can evaluate DB against your project's technical requirements. As such, this document is intended for C++ developers and senior software architects who are looking for an in-process data management solution. No prior experience with Berkeley DB is expected or required.

## Conventions Used in this Book

The following typographical conventions are used within in this manual:

Class names are represented in `monospaced font`, as are `method names`. For example: "`Db::open()` is a `Db` class method."

Variable or non-literal text is presented in italics. For example: "Go to your DB_INSTALL directory."

Program examples are displayed in a `monospaced font` on a shaded background. For example:

    typedef struct vendor {
        char name[MAXFIELD];             // Vendor name
        char street[MAXFIELD];           // Street name and number
        char city[MAXFIELD];             // City
        char state[3];                   // Two-digit US state code
        char zipcode[6];                 // US zipcode
        char phone_number[13];           // Vendor phone number
    } VENDOR;

In some situations, programming examples are updated from one chapter to the next. When this occurs, the new code is presented in `monospaced bold` font. For example:

    typedef struct vendor {
        char name[MAXFIELD];             // Vendor name
        char street[MAXFIELD];           // Street name and number
        char city[MAXFIELD];             // City
        char state[3];                   // Two-digit US state code
        char zipcode[6];                 // US zipcode
        char phone_number[13];           // Vendor phone number
        char sales_rep[MAXFIELD];        // Name of sales representative
        char sales_rep_phone[MAXFIELD];  // Sales rep's phone number
    } VENDOR;

### Note

Finally, notes of interest are represented using a note block such as this.

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