DBMS Pertanyaan dan Jawaban Wawancara
Test your skills through the online practice test: DBMS Quiz Online Practice Test
Perbedaan terkait
Ques 41. What is degree of a Relation?
It is the number of attribute of its relation schema.
Apakah ini membantu?
Add Comment
View Comments
Ques 42. What is Relationship?
It is an association among two or more entities.
Apakah ini membantu?
Add Comment
View Comments
Ques 43. What is Functional Dependency?
A Functional dependency is denoted by X Y between two sets of attributes X and Y that are subsets of R specifies a constraint on the possible tuple that can form a relation state r of R. The constraint is for any two tuples t1 and t2 in r if t1[X] = t2[X] then they have t1[Y] = t2[Y]. This means the value of X component of a tuple uniquely determines the value of component Y.
Apakah ini membantu?
Add Comment
View Comments
Ques 44. What is 1 NF (Normal Form)?
The domain of attribute must include only atomic (simple, indivisible) values.
Apakah ini membantu?
Add Comment
View Comments
Ques 45. What is Fully Functional dependency?
It is based on concept of full functional dependency. A functional dependency X Y is full functional dependency if removal of any attribute A from X means that the dependency does not hold any more.
Apakah ini membantu?
Add Comment
View Comments
Most helpful rated by users:
- What is database or database management systems (DBMS)?
- What is SQL?
- What's the difference between file and database? Can files qualify as a database?
- What are E-R diagrams?
- Whats difference between DBMS and RDBMS?