View of Data Quiz with Answers PDF Download – Test 277

MCQ 1381: A collection of conceptual tools for describing data, data relationships, data semantics, and consistency constraints, is known as:

1. Data organization
2. Data Binding
3. Data schemas
4. Data models

MCQ 1382: SQL includes a Boolean function for testing whether a subquery has:

1. Unique tuples
2. Duplicate tuples
3. Tuples
4. Empty tuples

MCQ 1383: For handling, null values are:

1. Easy
2. Difficult
3. Complex
4. Preferable

MCQ 1384: The command for deleting the instructor relation having salary range $13,000 and $15,000:

1. delete about instructor
   where salary between 13000 and 15000;
2. delete from instructor
   where salary between 13000 and 15000;
3. delete from instructor
   where salary Like 13000 and 15000;
4. delete about instructor where salary Like 13000 and 15000;

MCQ 1385: The cost estimate for the A5 search is same to that for the case:

1. A1
2. A2
3. A3
4. A4