Sql - Alter Statement

SQL - As clause

The as sql clause renames a relation or the attribute of a relation. This is a runtime operation and does not rename a table or a column. To rename a table or a column, the alter statement should be "...

SQL - Schema (Metadata)

A SQL schema is two things: It'is a persistent, named collection of metadata (known as information_schema) that defines a schema a scope because a schema is part of the object identifier. A SQL Sche "...