CheckConstraints returns an empty set it is unclear how to extract check constraints from SQLite other than parsing the sqlite_master.sql column.

Columns obtains the list of columns for the (schemaName, tableName) parameters and returns the results.

CurrentCatalog defines the query for obtaining information about the currently connected catalog (database) and returns the results of executing the query.

Indexes defines the query for obtaining a list of indexes for the (schemaName, tableName) parameters and returns the results of executing the query.

Name returns the name of the specific database engine.

PrimaryKeys defines the query for obtaining the primary keys for the (schemaName, tableName) parameters and returns the results of executing the query.

ReferentialConstraints defines the query for obtaining the referential constraints for the (schemaName, tableName) parameters (as either the parent or child) and returns the results of executing the query.

Schemata doesn't do much as sqlite doesn't appear to have schemas.

Tables defines the query for obtaining a list of tables and views for the (schemaName) parameter and returns the results of executing the query.

UniqueConstraints defines the query for obtaining a list of unique constraints for the (schemaName, tableName) parameters and returns the results of executing the query.