- A2005
- B 2007
- C 2009
- D 2011
Database Management System - Quiz
- ARelational
- BDocument-oriented
- CKey-value
- DGraph
- ASnapshot read concern
- BRead uncommitted
- CRead committed
- DRepeatable read
- A INSERT
- B UPDATE
- C SELECT
- D CREATE
- A CALCULATE
- B COMPUTE
- C AGGREGATE
- D SELECT
- A SELECT ALL
- B JOIN
- C MERGE
- D COMBINE
- A UPDATE NULL
- B SET NULL
- C MODIFY NULL
- D NULLIFY
- A PRIMARY KEY
- B UNIQUE
- C FOREIGN KEY
- D INDEX
- A Stored function
- B Stored procedure
- C Trigger
- D View
Results:
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🟢 Correct Answers: 🔴 Wrong Answers:
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Quiz Information
Quiz Information
Quiz Platform FAQ
General Information
- Number of Questions: Each quiz consists of 10 questions.
- Time Limit: You have 30 seconds per question. The total time to complete the quiz is 5 minutes.
- Multiple Attempts: You can take the quiz multiple times to improve your score.
Results and Feedback
- Result Analysis: After completing the quiz, you will see a results page with the following details:
- Correct Option for each question.
- Your Selected Option for each question.
- Explanation for each answer to help you understand why it is correct or incorrect.
- Percentage of Correct Answers to show your overall performance.
- Interactive Features: The platform provides feedback on each attempt to help you learn and improve.
Important Instructions
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Quiz Analytics
Database Management System - Quiz
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Time Taken: Questions: Answered: Not Answered:
Correct Answer:
Wrong Answer:
Percentage: %
- A. 2005
- B. 2007
- C. 2009
- D. 2011
Remarks:
Explanation:
Answer: 2009
Explanation: MongoDB was initially released on February 11, 2009.
- A. Relational
- B. Document-oriented
- C. Key-value
- D. Graph
Remarks:
Explanation:
Answer: Document-oriented
Explanation: MongoDB is a document-oriented database.
- A. Snapshot read concern
- B. Read uncommitted
- C. Read committed
- D. Repeatable read
Remarks:
Explanation:
Answer: Snapshot read concern
Explanation: MongoDB introduced the snapshot read concern in version 4.0, which made queries against an index atomic .
- A. INSERT
- B. UPDATE
- C. SELECT
- D. CREATE
Remarks:
Explanation:
The CREATE statement in MySQL is used to create a new table. It specifies the table name, column names, data types, and any constraints or indexes associated with the table.
- A. CALCULATE
- B. COMPUTE
- C. AGGREGATE
- D. SELECT
Remarks:
Explanation:
The AGGREGATE statement in MySQL is used to perform calculations on data, such as computing sums, averages, counts, and other aggregate functions.
- A. SELECT ALL
- B. JOIN
- C. MERGE
- D. COMBINE
Remarks:
Explanation:
The JOIN statement in MySQL is used to retrieve data from multiple tables by establishing relationships between them. It allows you to combine related data from different tables.
- A. UPDATE NULL
- B. SET NULL
- C. MODIFY NULL
- D. NULLIFY
Remarks:
Explanation:
The SET NULL statement in MySQL is used to update a column with a NULL value. It allows you to set a column's value to NULL, indicating the absence of a value.
- A. AVG
- B. SUM
- C. COUNT
- D. MAX
Remarks:
Explanation:
The COUNT function in MySQL is used to determine the number of rows in a result set or a specific column. It counts the number of records present in the specified context.
- A. PRIMARY KEY
- B. UNIQUE
- C. FOREIGN KEY
- D. INDEX
Remarks:
Explanation:
The PRIMARY KEY constraint in MySQL uniquely identifies each row in a table. It ensures that each value in the specified column or set of columns is unique and not NULL.
- A. Stored function
- B. Stored procedure
- C. Trigger
- D. View
Remarks:
Explanation:
A trigger is a MySQL object that is used to automatically execute SQL statements in response to specific events, such as INSERT, UPDATE, or DELETE operations on a table. Triggers are defined to perform actions based on the occurrence of predefined events.