Database Systems MCQs (Computer Science) From Textbook

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Database Systems Exam MCQs – Practice Test 12 (Chapter 4)

Database Design and ER Model Notes Questions with Answers PDF Download – Test 12

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The MCQ: If only some entities in E participate in relationships in R, the participation of entity set E in relationship R is said to be; "Database Design and ER Model Notes" App APK Download with answers: whole, total, partial, and moment for computer science online programs. Practice Overview of SQL Query Language Quiz Questions, download Kobo e-Book (Free Chapter) for computer science online programs.

Database Design and ER Model MCQs – Practice Test 12 PDF Download

MCQ: 56

If only some entities in E participate in relationships in R, the participation of entity set E in relationship R is said to be

  1. Total
  2. Whole
  3. Partial
  4. Moment
MCQ: 57

Every weak entity must be associated with a/an

  1. Identifying entity
  2. Relatable entity set
  3. Strong entity set
  4. Relational entity set
MCQ: 58

An entity set that has a primary key is known as

  1. Sufficient entity set
  2. Strong entity set
  3. Weak entity set
  4. Rational entity set
MCQ: 59

The most widely used notations for modeling data, is

  1. XML
  2. UML
  3. E-R diagram
  4. Both A and B
MCQ: 60

The relationship of specialization may also be known as a/an

  1. Subclass-superclass relationship
  2. Superclass-subclass relationship
  3. Higher-level relationship
  4. Lower-level relationship

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