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>PostgreSQL 8.0.11 Documentation</TH
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><DIV
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><H1
CLASS="TITLE"
>IV. Client Interfaces</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN22500"
></A
><P
> This part describes the client programming interfaces distributed
with <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>. Each of these chapters can be
read independently. Note that there are many other programming
interfaces for client programs that are distributed separately and
contain their own documentation (<A
HREF="external-projects.html"
>Appendix H</A
>
lists some of the more popular ones). Readers of this part should be
familiar with using <ACRONYM
CLASS="ACRONYM"
>SQL</ACRONYM
> commands to manipulate
and query the database (see <A
HREF="sql.html"
>Part II</A
>) and of course
with the programming language that the interface uses.
</P
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><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>27. <A
HREF="libpq.html"
><SPAN
CLASS="APPLICATION"
>libpq</SPAN
> - C Library</A
></DT
><DD
><DL
><DT
>27.1. <A
HREF="libpq.html#LIBPQ-CONNECT"
>Database Connection Control Functions</A
></DT
><DT
>27.2. <A
HREF="libpq-status.html"
>Connection Status Functions</A
></DT
><DT
>27.3. <A
HREF="libpq-exec.html"
>Command Execution Functions</A
></DT
><DT
>27.4. <A
HREF="libpq-async.html"
>Asynchronous Command Processing</A
></DT
><DT
>27.5. <A
HREF="libpq-cancel.html"
>Cancelling Queries in Progress</A
></DT
><DT
>27.6. <A
HREF="libpq-fastpath.html"
>The Fast-Path Interface</A
></DT
><DT
>27.7. <A
HREF="libpq-notify.html"
>Asynchronous Notification</A
></DT
><DT
>27.8. <A
HREF="libpq-copy.html"
>Functions Associated with the <TT
CLASS="COMMAND"
>COPY</TT
> Command</A
></DT
><DT
>27.9. <A
HREF="libpq-control.html"
>Control Functions</A
></DT
><DT
>27.10. <A
HREF="libpq-notice-processing.html"
>Notice Processing</A
></DT
><DT
>27.11. <A
HREF="libpq-envars.html"
>Environment Variables</A
></DT
><DT
>27.12. <A
HREF="libpq-pgpass.html"
>The Password File</A
></DT
><DT
>27.13. <A
HREF="libpq-ssl.html"
>SSL Support</A
></DT
><DT
>27.14. <A
HREF="libpq-threading.html"
>Behavior in Threaded Programs</A
></DT
><DT
>27.15. <A
HREF="libpq-build.html"
>Building <SPAN
CLASS="APPLICATION"
>libpq</SPAN
> Programs</A
></DT
><DT
>27.16. <A
HREF="libpq-example.html"
>Example Programs</A
></DT
></DL
></DD
><DT
>28. <A
HREF="largeobjects.html"
>Large Objects</A
></DT
><DD
><DL
><DT
>28.1. <A
HREF="largeobjects.html#LO-HISTORY"
>History</A
></DT
><DT
>28.2. <A
HREF="lo-implementation.html"
>Implementation Features</A
></DT
><DT
>28.3. <A
HREF="lo-interfaces.html"
>Client Interfaces</A
></DT
><DT
>28.4. <A
HREF="lo-funcs.html"
>Server-Side Functions</A
></DT
><DT
>28.5. <A
HREF="lo-examplesect.html"
>Example Program</A
></DT
></DL
></DD
><DT
>29. <A
HREF="ecpg.html"
><SPAN
CLASS="APPLICATION"
>ECPG</SPAN
> - Embedded <ACRONYM
CLASS="ACRONYM"
>SQL</ACRONYM
> in C</A
></DT
><DD
><DL
><DT
>29.1. <A
HREF="ecpg.html#ECPG-CONCEPT"
>The Concept</A
></DT
><DT
>29.2. <A
HREF="ecpg-connect.html"
>Connecting to the Database Server</A
></DT
><DT
>29.3. <A
HREF="ecpg-disconnect.html"
>Closing a Connection</A
></DT
><DT
>29.4. <A
HREF="ecpg-commands.html"
>Running SQL Commands</A
></DT
><DT
>29.5. <A
HREF="ecpg-set-connection.html"
>Choosing a Connection</A
></DT
><DT
>29.6. <A
HREF="ecpg-variables.html"
>Using Host Variables</A
></DT
><DT
>29.7. <A
HREF="ecpg-dynamic.html"
>Dynamic SQL</A
></DT
><DT
>29.8. <A
HREF="ecpg-descriptors.html"
>Using SQL Descriptor Areas</A
></DT
><DT
>29.9. <A
HREF="ecpg-errors.html"
>Error Handling</A
></DT
><DT
>29.10. <A
HREF="ecpg-include.html"
>Including Files</A
></DT
><DT
>29.11. <A
HREF="ecpg-process.html"
>Processing Embedded SQL Programs</A
></DT
><DT
>29.12. <A
HREF="ecpg-library.html"
>Library Functions</A
></DT
><DT
>29.13. <A
HREF="ecpg-develop.html"
>Internals</A
></DT
></DL
></DD
><DT
>30. <A
HREF="information-schema.html"
>The Information Schema</A
></DT
><DD
><DL
><DT
>30.1. <A
HREF="information-schema.html#INFOSCHEMA-SCHEMA"
>The Schema</A
></DT
><DT
>30.2. <A
HREF="infoschema-datatypes.html"
>Data Types</A
></DT
><DT
>30.3. <A
HREF="infoschema-information-schema-catalog-name.html"
><TT
CLASS="LITERAL"
>information_schema_catalog_name</TT
></A
></DT
><DT
>30.4. <A
HREF="infoschema-applicable-roles.html"
><TT
CLASS="LITERAL"
>applicable_roles</TT
></A
></DT
><DT
>30.5. <A
HREF="infoschema-check-constraints.html"
><TT
CLASS="LITERAL"
>check_constraints</TT
></A
></DT
><DT
>30.6. <A
HREF="infoschema-column-domain-usage.html"
><TT
CLASS="LITERAL"
>column_domain_usage</TT
></A
></DT
><DT
>30.7. <A
HREF="infoschema-column-privileges.html"
><TT
CLASS="LITERAL"
>column_privileges</TT
></A
></DT
><DT
>30.8. <A
HREF="infoschema-column-udt-usage.html"
><TT
CLASS="LITERAL"
>column_udt_usage</TT
></A
></DT
><DT
>30.9. <A
HREF="infoschema-columns.html"
><TT
CLASS="LITERAL"
>columns</TT
></A
></DT
><DT
>30.10. <A
HREF="infoschema-constraint-column-usage.html"
><TT
CLASS="LITERAL"
>constraint_column_usage</TT
></A
></DT
><DT
>30.11. <A
HREF="infoschema-constraint-table-usage.html"
><TT
CLASS="LITERAL"
>constraint_table_usage</TT
></A
></DT
><DT
>30.12. <A
HREF="infoschema-data-type-privileges.html"
><TT
CLASS="LITERAL"
>data_type_privileges</TT
></A
></DT
><DT
>30.13. <A
HREF="infoschema-domain-constraints.html"
><TT
CLASS="LITERAL"
>domain_constraints</TT
></A
></DT
><DT
>30.14. <A
HREF="infoschema-domain-udt-usage.html"
><TT
CLASS="LITERAL"
>domain_udt_usage</TT
></A
></DT
><DT
>30.15. <A
HREF="infoschema-domains.html"
><TT
CLASS="LITERAL"
>domains</TT
></A
></DT
><DT
>30.16. <A
HREF="infoschema-element-types.html"
><TT
CLASS="LITERAL"
>element_types</TT
></A
></DT
><DT
>30.17. <A
HREF="infoschema-enabled-roles.html"
><TT
CLASS="LITERAL"
>enabled_roles</TT
></A
></DT
><DT
>30.18. <A
HREF="infoschema-key-column-usage.html"
><TT
CLASS="LITERAL"
>key_column_usage</TT
></A
></DT
><DT
>30.19. <A
HREF="infoschema-parameters.html"
><TT
CLASS="LITERAL"
>parameters</TT
></A
></DT
><DT
>30.20. <A
HREF="infoschema-referential-constraints.html"
><TT
CLASS="LITERAL"
>referential_constraints</TT
></A
></DT
><DT
>30.21. <A
HREF="infoschema-role-column-grants.html"
><TT
CLASS="LITERAL"
>role_column_grants</TT
></A
></DT
><DT
>30.22. <A
HREF="infoschema-role-routine-grants.html"
><TT
CLASS="LITERAL"
>role_routine_grants</TT
></A
></DT
><DT
>30.23. <A
HREF="infoschema-role-table-grants.html"
><TT
CLASS="LITERAL"
>role_table_grants</TT
></A
></DT
><DT
>30.24. <A
HREF="infoschema-role-usage-grants.html"
><TT
CLASS="LITERAL"
>role_usage_grants</TT
></A
></DT
><DT
>30.25. <A
HREF="infoschema-routine-privileges.html"
><TT
CLASS="LITERAL"
>routine_privileges</TT
></A
></DT
><DT
>30.26. <A
HREF="infoschema-routines.html"
><TT
CLASS="LITERAL"
>routines</TT
></A
></DT
><DT
>30.27. <A
HREF="infoschema-schemata.html"
><TT
CLASS="LITERAL"
>schemata</TT
></A
></DT
><DT
>30.28. <A
HREF="infoschema-sql-features.html"
><TT
CLASS="LITERAL"
>sql_features</TT
></A
></DT
><DT
>30.29. <A
HREF="infoschema-sql-implementation-info.html"
><TT
CLASS="LITERAL"
>sql_implementation_info</TT
></A
></DT
><DT
>30.30. <A
HREF="infoschema-sql-languages.html"
><TT
CLASS="LITERAL"
>sql_languages</TT
></A
></DT
><DT
>30.31. <A
HREF="infoschema-sql-packages.html"
><TT
CLASS="LITERAL"
>sql_packages</TT
></A
></DT
><DT
>30.32. <A
HREF="infoschema-sql-sizing.html"
><TT
CLASS="LITERAL"
>sql_sizing</TT
></A
></DT
><DT
>30.33. <A
HREF="infoschema-sql-sizing-profiles.html"
><TT
CLASS="LITERAL"
>sql_sizing_profiles</TT
></A
></DT
><DT
>30.34. <A
HREF="infoschema-table-constraints.html"
><TT
CLASS="LITERAL"
>table_constraints</TT
></A
></DT
><DT
>30.35. <A
HREF="infoschema-table-privileges.html"
><TT
CLASS="LITERAL"
>table_privileges</TT
></A
></DT
><DT
>30.36. <A
HREF="infoschema-tables.html"
><TT
CLASS="LITERAL"
>tables</TT
></A
></DT
><DT
>30.37. <A
HREF="infoschema-triggers.html"
><TT
CLASS="LITERAL"
>triggers</TT
></A
></DT
><DT
>30.38. <A
HREF="infoschema-usage-privileges.html"
><TT
CLASS="LITERAL"
>usage_privileges</TT
></A
></DT
><DT
>30.39. <A
HREF="infoschema-view-column-usage.html"
><TT
CLASS="LITERAL"
>view_column_usage</TT
></A
></DT
><DT
>30.40. <A
HREF="infoschema-view-table-usage.html"
><TT
CLASS="LITERAL"
>view_table_usage</TT
></A
></DT
><DT
>30.41. <A
HREF="infoschema-views.html"
><TT
CLASS="LITERAL"
>views</TT
></A
></DT
></DL
></DD
></DL
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