Database Systems Practice Test 296
Database Schema Multiple Choice Questions (MCQs) PDF Download - 296
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Database Schema MCQ Quiz with Answers PDF Download: Test 296
The concept of a relation schema corresponds to the programming-language notion of
- Class
- Function
- Variable
- Type definition
Relational model attained its primary position because of its
- Complexity
- Definitive nature
- Declarative nature
- Simplicity
SQL does not allow the use of distinct with
- Avg(*)
- Min(*)
- Sum(*)
- Count(*)
When embedded SQL is used, some SQL-related errors may be caught at
- Processed time
- Runtime
- Compile time
- Stream time
The process of moving from an abstract data model to the implementation of the database proceeds in
- 1st Initial design phases
- 1st two initial design phases
- two final design phases
- Last design phase
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Database Schema Practice Tests
- In relational algebra, union, set difference, and Cartesian product operations are known to be
- Snapshot isolation scheme does not support
- If we have relations of type r1(R1) and r2(R2), then r1 . r2 is a relation whose schema is
- In model-view-controller (MVC) architecture, view corresponds to
- Request such as:
insert into student
select *
from student;
encounters problem of