Database Design Quiz PDF: Questions and Answers - 175

MCQ 871: The null value indicates that the value

1. Exist
2. Doesn't exist
3. Not known
4. Both B and C

MCQ 872: When the client program makes an ODBC API call, the code in the library communicates with the

1. Server
2. Database
3. Administrator
4. Cloud

MCQ 873: The primary-key specifications are

1. Mandatory
2. Optional
3. Unique
4. Identity node

MCQ 874: For grouping the attributes to form various tables, there are principally

1. 2 ways
2. 3 ways
3. 4 ways
4. No defined way

MCQ 875: A negative value returned for the length field indicates that the value is

1. 1
2. End of list
3. Error
4. Null