New creates a new catalog.

Catalog describes a database instance consisting of metadata in which database objects are defined.

Column describes a set of data values of a particular type in a relational database table TODO: Should this just be ast Nodes?.

Function describes a database function A database function is a method written to perform a specific operation on data within the database.

Schema describes how the data in a relational database may relate to other tables or other data models.

Table describes a relational database table A database table is a collection of related data held in a table format within a database.