The PostgreSQL system catalog and system administration functions can aid both developers and administrators to keep the database clean and performant. System catalogs can be used to automate several tasks, such as finding tables without indexes, finding dependencies between database objects, and extracting information about the database using health checks, such as table bloats, and database size. Information extracted from the system catalog can be employed in monitoring solutions and in dynamic SQL. This chapter will discuss some tasks that a developer and administrator need to execute on a daily basis, for example, cleaning up database data and unused objects, building an index automatically, and monitoring database objects access.
The following topics will be covered in this chapter:
- An overview of the system catalog
- System catalog for administrators...
