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- Question
What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?
Options- A. ALTER TABLE STUDENT ALTER CONSTRAINT GradeCheck (Grade > 0);
- B. ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck (Grade > 0);
- C. ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);
- D. None of the above is correct.
- Correct Answer
- ALTER TABLE STUDENT ADD CONSTRAINT GradeCheck CHECK (Grade > 0);
- 1. In the relational model, relationships between relations or tables are created by using:
Options- A. composite keys.
- B. determinants.
- C. candidate keys.
- D. foreign keys. Discuss
- 2. What does microprocessor speed depend on? Discuss
- 3. What does RSI stand for? Discuss
- 4. Which Stack is used in 8086? Discuss
- 5. What is object repository? Discuss
- 6. Which is the Stack used in 8085? Discuss
- 7. What does GUI stand for? Discuss
- 8. What is the main reason the OSI Model was created? Discuss
- 9. Ethernet uses which topology
Options- A. Star
- B. Bus
- C. Twisted pair
- D. Both B & C Discuss
- 10. What are various scheduling queues? Discuss
More questions
Correct Answer: foreign keys.
Correct Answer: the processing speed depends on DATA BUS WIDTH
Correct Answer: Repetitive Strain Injury
Correct Answer: FIFO (First In First Out) stack is used in 8086 In this type of Stack the First Stored Information is retrieved first
Correct Answer: Object Repository means not a collection of objects it's a common repository for all the people (testing, developers) for seeing all the data in single login for example QA wants to see 5 testers works then he goes to each person login and see the data It's very difficult job for this we can use Object Repository
Correct Answer: LIFO (Last In First Out) stack is used in 8085 in this type of Stack the last stored information can be retrieved first
Correct Answer: Graphical User Interface
Correct Answer: The OSI Model is used as a reference model The primary reason the OSI model was created was so that different networks could inter-operate Hence, different networks could communicate
Correct Answer: Bus
Explanation:
Ethernet uses Bus topology.
Correct Answer: Job queue Ready queue Device queue
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