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Oracle database administrator面试题
2014-11-24 02:23:02 】 浏览:331
Tags:Oracle database administrator 试题

1. Differentiate between TRUNCATE and DELETE
2. What is the maximum buffer size that can be specified using the DBMS_OUTPUT.ENABLE function
3. Can you use a commit statement within a database trigger
4. What is an UTL_FILE.What are different procedures and functions associated with it


5. Difference between database triggers and form triggers
6. What is OCI. What are its uses
7. What are ORACLE PRECOMPILERS
8. What is syntax for dropping a procedure and a function Are these operations possible
9. Can a function take OUT parameters. If not why
10. Can the default values be assigned to actual parameters
11. What is difference between a formal and an actual parameter
12. What are different modes of parameters used in functions and procedures
13. Difference between procedure and function.
14. Can cursor variables be stored in PL/SQL tables.If yes how. If not why
15. How do you pass cursor variables in PL/SQL
16. How do you open and close a cursor variable.Why it is required
17. What should be the return type for a cursor variable.Can we use a scalar data type as return type
18. What is use of a cursor variable How it is defined
19. What WHERE CURRENT OF clause does in a cursor
20. Difference between NO DATA FOUND and %NOTFOUND
21. What is a cursor for loop
22. What are cursor attributes
23. Difference between an implicit & an explicit cursor.
24. What is a cursor
25. What is the purpose of a cluster
26. How do you find the numbert of rows in a Table
27. Display the number value in Words
28. What is a pseudo column. Give some examples
29. How you will avoid your query from using indexes
30. What is a OUTER JOIN
31. Which is more faster – IN or EXISTS
32. When do you use WHERE clause and when do you use HAVING clause
33. There is a % sign in one field of a column. What will be the query to find it
34. What is difference between SUBSTR and INSTR
35. Which datatype is used for storing graphics and images
36. What is difference between SQL and SQL*PLUS
37. What is difference between UNIQUE and PRIMARY KEY constraints
38. What is difference between Rename and Alias
39. What are various joins used while writing SUBQUERIES



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