How many types of problems in relation?
a) one
b) two
c) three
d) four
Explanation: synonym, homonym, redundancy, mutual exclusive of data
Two or more attributes having different names, but same meaning is called…..
a) homonyms
b) aliases
c) synonyms
d) alternate attributes
Which of the following problem is created, when same name is used for two different attributes?
a) homonyms
b) aliases
c) synonyms
d) alternate attributes
Duplication of data in multiple files is called…
a) homonyms
b) aliases
c) synonyms
d) redundancy
Which of the following combines the product, selection, and possibly projection?
a) union
b) join
c) intersection
d) none of these
How many types of joins in database?
a) one
b) two
c) three
d) four
Explanation: Theta join, equi join, natural join, outer join
