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- Question
What is the difference between oracle,sql and sql server?
- Correct Answer
- Oracle is based on RDBMS SQL is Structured Query Language SQL Server is another tool for RDBMS provided by MicroSoft
- 1. Which among the following keys are used to identify each row of the table uniquely?
Options- A. Primary key
- B. Unique key
- C. Partial key
- D. None of the above Discuss
- 2. Explain Data Control Language Discuss
- 3. MOV extension refers usually to what kind of files?
Options- A. Audio
- B. Movies or other Videos
- C. Images
- D. Documents Discuss
- 4. what will be the output of the following code? class Value { public int i = 15; } public class Test { public static void main(String argv[]) { Test t = new Test(); t.first(); } public void first() { int i = 5; Value v = new Value(); v.i = 25; second(v, i); System.out.println(v.i); } public void second(Value v, int i) { i = 0; v.i = 20; Value val = new Value(); v = val; System.out.println(v.i + " " + i); } }
Options- A. 15 0 2
- B. 15 0 0
- C. 15 20 0
- D. 15 0 20 Discuss
- 5. What is the default return value of a function?
Options- A. int
- B. char
- C. string
- D. None of the above Discuss
- 6. A Transparent DBMS
Options- A. Keep its logical structure hidden from users
- B. Can access control
- C. Keeps its physical structure hidden from users
- D. Can not hide sensitive information from users Discuss
- 7. A relational database developer refers to a record as
Options- A. a relation
- B. an attribute
- C. a criteria
- D. a tuple Discuss
- 8. Count function in SQL returns the number of
Options- A. groups
- B. values or rows
- C. columns
- D. distinct values Discuss
- 9. What is the purpose of SQL Profiler in SQL server? Discuss
- 10. What is XPath? Discuss
Oracle Certification problems
Search Results
Correct Answer: Primary key
Explanation:
Primary key helps us to identify a row uniquely in a relation
Correct Answer: Data Control Language (DCL):-statements to take care of the security and authorization Examples: GRANT REVOKE
Correct Answer: Movies or other Videos
Explanation:
A .MOV file is a common multimedia container file format developed by Apple. It may contain multiple tracks that store different types of media data and is often used for saving movies and other video files.
Correct Answer: 15 0 20
Correct Answer: int
Explanation:
The default return value from a function is int. In other words, unless explicitly specified the default return value by compiler would be integer value from function.
Correct Answer: Keeps its physical structure hidden from users
Explanation:
DBMS :: Database Managemet System.
A DBMS which keeps its physical structure hidden from the user is known as a transparent DBMS.
Correct Answer: a tuple
Explanation:
A relational database developer refers to a record as a tuple.
Correct Answer: values or rows
Explanation:
Count function in SQL returns the number of values or rows.
Correct Answer: SQL profiler is a tool to monitor performance of various stored procedures It is used to debug the queries and procedures Based on performance, it identifies the slow executing queries Capture any problems by capturing the events on production environment so that they can be solved
Correct Answer: XPath is an expressions to select a xml node in an XML document It allows the navigation on the XML document to the straight to the element where we need to reach and access the attributes
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