EER Model Concepts MCQ with Answers PDF Download – Test 112

MCQ 556: In the enhanced-entity-relationship, the collection of entities in the form of set is classified as:

1. object
2. schema
3. class
4. construct

MCQ 557: The expression of generalized projection can be written as:

1. π F1, F2, Fn ( R )
2. θ F1, F2, Fn ( R )
3. σ F1, F2, Fn ( R )
4. β F1, F2, Fn ( R )

MCQ 558: The entity involved in the process of specialization is considered as:

1. medium class of entity
2. mini class of entity
3. subclass of entity
4. super class of entity

MCQ 559: The complete description of database which is described in design phase and is changed rarely is called:

1. schema
2. structure
3. path of design
4. data cycle scheme

MCQ 560: The step in database design in which the high level data model is converted into the model of data implementation is considered as:

1. physical design of database
2. data model mapping
3. logical design
4. both a and c