The SQL - structured query language is the implementation of relational model. True or False _______________________________________________________________...
The SQL - structured query language is the implementation of relational model.
True or False
_______________________________________________________________
In relational model, the relational calculus is declarative.
True or False
_______________________________________________________________
In relational model, the relational algebra is declarative.
True or False
_______________________________________________________________
In relational model, the column entry value in a relation is simple attribute value.
True or False
_______________________________________________________________
In relational model, column entries in a relation are single valued.
True or False
_______________________________________________________________
A database management system (DBMS) is
b. an interface between database systems and computer operating systems
neither a. nor b.
a. an interface between database users and database system.
both a. and b.
Homework Answers
1.The SQL - structured query language is the implementation of relational model.
Ans : False (SQL deviates from relational model in many ways)
2. In relational model, the relational calculus is declarative.
Ans : True
3.In relational model, the relational algebra is declarative.
Ans : False (Relational algebra is procedural)
4. In relational model, the column entry value in a relation is simple attribute value.
Ans : True
5.In relational model, column entries in a relation are single valued.
Ans : True
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The SQL - structured query language is the implementation of
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