In the three-schema architecture, which level deals with the constraints?

In the three-schema architecture, which level deals with the constraints?  *1 pointphysical levellogical levelconceptual levelview level

Three-schema architecture is part of the Entity-Relationship Data Model. True False

The architecture of a database can be viewed as the ________.a.One levelb.Three-levelc.Two-leveld.Four level

Considering the Three-Schema Architecture, which of the following is correct?A. The conceptual level describes the physical storage structure of the database.B. Logical data independence provides the ability to move the physical location of where data is stored without making changes to the applications.C. Physical data independence provides the ability to modify physical schema without making changes to the logical schema.D. The external level provides access to changing the schema of the relations in a database.

In the Three Level Schema Architecture, which of the following schemas directly interacts with the DBMS?A) Internal SchemaB) External SchemaC) Conceptual SchemaD) Physical Schema