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Exercise

Getting information about your database

As we saw in the video, PostgreSQL has a system database called INFORMATION_SCHEMA that allows us to extract information about objects, including tables, in our database.

In this exercise we will look at how to query the tables table of the INFORMATION_SCHEMA database to discover information about tables in the DVD Rentals database including the name, type, schema, and catalog of all tables and views and then how to use the results to get additional information about columns in our tables.

Instructions 1/2
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  • 1

    Select all columns from the INFORMATION_SCHEMA.TABLES system database. Limit results that have a public table_schema.

  • 2

    Select all columns from the INFORMATION_SCHEMA.COLUMNS system database. Limit by table_name to actor

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