Interested to Buy Any Domain ? << Click Here >> for more details...
what is difference between join and union?
- 3 Answers
- 11465 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / rajeev singh
Join display exact information from two or more tables.
and it is not compulsory in both table column equal.
Where as in UNION in both table column should be equal.
and union eliminate the dublicate rows.
| Is This Answer Correct ? | 15 Yes | 2 No |
Answer / sunil
JOIN: You can join the 2 tables on tables primary key or on
the filed which refers to another table
UNION: In both table while doing UNION the filed name
should be same.
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / harish
JOIN: column wise joining of data.....
UNIOn: row wise joining of data........
Harish poomgame shivappa
NIIT Technolgies
Kolkata
| Is This Answer Correct ? | 8 Yes | 9 No |
What is meant by idd in idms?
Difference between fixed length and variable length records.
Explain storage architecture of idms.
Explain the three location modes?
What is the meaning of Copy IDMS Subschema-Binds?
Explain about record currency?
What are the types of record locks and how are they set?
Is there a application program coding difference between local and central version mode?
What does a rollback do in idms?
What is the purpose of store statement?
What is an area sweep and when is it used?
Why would you use find and get rather than an obtain?
COBOL 
