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

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

Which is not a level in the three level for database?1 pointdata levelinternal levelexternal levelconceptual level

What are the different levels of abstraction in a DBMS?Physical LevelLogical LevelTop LevelView LevelEntity Level

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

Which of these are not part of the levels of the ANSI-SPARC architectureGroup of answer choicesSystem LevelPresentation levelExternal LevelInternal LevelConceptual Level