July 2005
Intermediate to advanced
1032 pages
27h 10m
English
Content preview from PostgreSQL, Second Edition
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Chapter 8. The PostgreSQL C API—libpq
A user interacts with a PostgreSQL database by using an application, but how does an application interact with PostgreSQL? PostgreSQL provides a number of application programming interfaces (or APIs for short). Three of these APIs are designed to be used by applications written in C-libpq, libpgeasy, and ODBC (the ODBC API can easily be used from other languages as well). Each API has advantages and disadvantages. libpgeasy, for example, is very easy to use, but doesn't offer much flexibility. If your application uses the ODBC API, you gain portability at the cost of complexity.
Table 8.1 compares the three C-language APIs offered by PostgreSQL.
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