Answer Posted / Ravi Bhushan Mishra
Relational Algebra is a formalism used to manipulate data in relational databases. It defines a set of operators (selection, projection, join, division, union, intersection, difference) that allow transforming relations (tables) according to specific conditions or operations. Relational algebra provides a mathematical foundation for SQL and other query languages.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Who proposed the relational model?
How to export data from database and import into another?
1. Tell me about your self? 2. Latest Project Introduction? 3. Difference between server jobs and parallel jobs? 4. Seq-Seq Explain its behavior and execution mode and which parallelism technique is used? 5. What is padding characters? 6. Seq-Seq, Seq-Copy-Seq which one is the best and efficient? 7. How many reject links do we have to a transformer? 8. How many reject links to join stage? 9. Difference between join and lookup? 10. How to design PX routine? 11. How can we call job in another job? 12. Difference between batch and sequencer? 13. Which Database is used? 14. What is change capture? Give briefing of that? 15. What is change Code? Explain? 16. How you call UNIX in Ds? 17. How do you call JCL in UNIX? 18. How do you pass the job status of one job to another job? Have designed any job sequencer? 19. How do you find a file in existed directory? 20. How can you call parallel jobs in transformer? 21. Execution of jobs in command line? 22. Tuning of sql queries? 23. What is orchestrating metadata? 24. What are junk dimension? 25. What are the third party tools you are used? 26. What are the system variables you have used?
What is the difference between case version and decode version?
what is the age limit for groups1 examination
Have you written applications to retrieve stored images in a table?
Suppose database is running slow, what will you do?
Plz send me Oracle Pl/Sql [1z0-147] dumps to this mail? sivakumarr1987@gmail.com
8. Sort, Lookup What kind of technique (partition) is used? 9. How can you handle exceptions in job sequencer? 10. How do you apply custom conditions an exceptions (How do you trigger exceptions in job sequence?) 11. I have a job with 3 possibilities? Finish with ok…..Abort…….Warning} How do you handle these in Job sequencer 12. How do you connect both OK and Warning can we? 13. How to find which process is running currently? 14. How do you find the disk usage in UNIX? 15. How do you combine 2 sequential files having same metadata of same file names? 16. How do you implement SCD in Ds? 17. Explain the situation where you have applied? 18. How do you apply new changes to? 19. Difference between change capture and Change apply? 20. Explain Compare Stage? 21. What is Surrogate key? 22. How to solve the problem of null values?
Is there some bulk load or other way to import a lot of data fast?
What are the two main functions of queries in databases?
What is a concurrency problem in dbms?
What are the advantages of database?
What versions of clipper does netlib support?
i have all the Oracle Certification material from 1z0-001 to 1Z0-643, if required just drop me a mail to: summi4you@yahoo.co.in
