DBMS Languages,”Data Definition Language – A language used where no separation of levels exists; used to define conceptual and internal schemasWhen a separation does exist:1. Storage Definition Language: Specifies internal schema2. View Definition Language: Specifies user views and their mappings to conceptual schema (SQL often takes on this role, but usually the DDL is dominent)3. Data Manipulation Language: Perform insertions, retrievals, deletions

Database
Average Rating
0 out of 5 stars. 0 votes.

DBMS Languages,”Data Definition Language – A language used where no separation of levels exists; used to define conceptual and internal schemasWhen a separation does exist:1. Storage Definition Language: Specifies internal schema2. View Definition Language: Specifies user views and their mappings to conceptual schema (SQL often takes on this role, but usually the DDL is dominent)3. Data Manipulation Language: Perform insertions, retrievals, deletions

modifications”