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- Question
A proxy server is used for which of the following?
Options- A. To provide security against unauthorized users
- B. To process client requests for Web pages
- C. To process client requests for database access
- D. To provide TCP/IP
- Correct Answer
- To provide security against unauthorized users
- 1. 88%of 370 +24% of 210-x =118 find x Discuss
- 2. The following SQL is which type of join: SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T ;
Options- A. Equi-join
- B. Natural join
- C. Outer join
- D. Cartesian join Discuss
- 3. The different classes of relations created by the technique for preventing modification anomalies are called:
Options- A. normal forms.
- B. functional dependencies.
- C. referential integrity constraints.
- D. None of the above is correct. Discuss
- 4. What are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms?
Options- A. Polish
- B. Reverse Polish
- C. Both A and B
- D. None of the above Discuss
- 5. For what purposes are views used?
Options- A. To hide rows only
- B. To hide columns only
- C. To hide complicated SQL statements only
- D. All of the above are uses for SQL views. Discuss
- 6. The benefits of object-oriented modeling are which of the following?
Options- A. The ability to tackle more challenging problems
- B. Reusability of analysis, design, and programming results
- C. Improved communication between users, analysts, etc.
- D. All of the above. Discuss
- 7. A collection of interrelated records is called a
Options- A. Datasheet
- B. Spreadsheet
- C. Database
- D. Utility File Discuss
- 8. When mapping a supertype/subtype relationship which of the following is true?
Options- A. The supertype primary key is assigned to each subtype.
- B. The subtype primary key is assigned to each supertype.
- C. There is no link between the supertype/subtype entities.
- D. There is no primary key/foreign key relationship between a supertype/subtype. Discuss
- 9. With this type of SQL Server cursor concurrency no lock is obtained until the user updates the data.
Options- A. READ_ONLY
- B. SCROLL_LOCK
- C. OPTIMISTIC
- D. PESSIMISTIC Discuss
- 10. For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?
Options- A. Two
- B. Three
- C. Four
- D. Six Discuss
Database problems
Search Results
Correct Answer: From the given equation, 88x370/100 + 24x210/100 - 118 = x => x = 3256 + 504 - 118 x = 258
Correct Answer: Cartesian join
Correct Answer: normal forms.
Correct Answer: Both A and B
Explanation:
Polish and Reverse Polish are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms
Correct Answer: All of the above are uses for SQL views.
Correct Answer: All of the above.
Correct Answer: Database
Correct Answer: The supertype primary key is assigned to each subtype.
Correct Answer: OPTIMISTIC
Correct Answer: Six
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