quiz RDBMS MCQ Practice

corporate_fare Computing and Information Technology
school B.Sc. Computer Science
28 Questions
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help Question 1
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Which of the following is the full form of RDBMS?

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What is an RDBMS?

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Does RDBMS have ACID properties?

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What is a relation in RDBMS?

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Which of the following systems use RDMS?

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Dynamic hashing allows us to?

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Which of the following constraints RDBS doesn’t check before creating the tables?

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Which of the following is the correct option for the given query? SELECT DISTINCT name FROM RDBMS WHERE ID IS NOT NULL;

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Which of the following is the correct output for the given query? &#40;SELECT databaseid FROM RDBMS WHERE SECTION = 'c'&#41; EXCEPT &#40;SELECT databaseid FROM RDBMS WHERE id < 10&#41;;

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Which of the following commands do we use to delete a relation (RDBMS) from a database?

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If RDBMS1, RDBMS2, RDBMS3 are attributes in a relation and S is another relation, which of the following is an incorrect specification of an integrity constraint?

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Which of the following is the time of temporal data that record when a fact was recorded in a database?

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________ deletes a data item from a database.

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What is the result of the following query? SELECT studentdatabasename FROM RDBMS WHERE marks > SOME &#40;SELECT marks FROM student WHERE SECTION = 'c'&#41;;

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________ is a predicate that we expect the database to always satisfy

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Which of the following is a good database management practice?

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What is an Instance of a Database?

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Which of the following information does the database system catalog store?

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If the database modifications occur while the transaction is still active, the transaction is said to use the __________ modification technique

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If a transaction does not modify the database until it has committed it is said to use a _______ modification technique

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The dependency rules specified by the database designer are known as _______

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During the _______ phase, the local variables that hold the write operations are copied to the database

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What is the format of entering date into a database while inserting data into it?

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What does the following query do? UPDATE student SET marks = marks*1.10;

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Which of the following cannot be used to modify the data in a database?

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Observe the given SQL query and choose the correct option. SELECT database_name, RDBMS &#40;DISTINCT bankuser_name&#41; FROM depositor, account WHERE depositor.account_number = account.account_number GROUP BY branch_id

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for each tuple tr in r do begin FOR each tuple ts IN s do BEGIN test pair &#40;tr , ts &#41; TO see IF they satisfy the JOIN condition _ IF they do, ADD tr • ts TO the RESULT; END END What type of join is this?

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Choose the correct option regarding the query SELECT branch_name, COUNT &#40;DISTINCT customer_name&#41; FROM depositor, account WHERE depositor.account_number = account.account_number GROUP BY branch_id HAVING avg&#40;balance&#41; = 10000;