Database Management System-MCQs<\/strong><\/h3>\n1. What is the full form of DBMS?
\na) Data of Binary Management System
\nb) Database Management System
\nc) Database Management Service
\nd) Data Backup Management System
\nThe correct answer is Database Management System<\/p>\n
2. What is a database?
\na) Organized collection of information that cannot be accessed, updated, and managed
\nb) Collection of data or information without organizing
\nc) Organized collection of data or information that can be accessed, updated, and managed
\nd) Organized collection of data that cannot be updated
\nThe correct answer is Organized collection of data or information that can be accessed, updated, and managed<\/p>\n
3. What is DBMS?
\na) DBMS is a collection of queries
\nb) DBMS is a high-level language
\nc) DBMS is a programming language
\nd) DBMS stores, modifies and retrieves data
\nThe correct answer is DBMS stores, modifies and retrieves data<\/p>\n
4. Who initially created the\u00a0 DBMS?
\na) Edgar Frank Codd
\nb) Charles Bachman
\nc) Charles Babbage
\nd) Sharon B. Codd
\nThe correct answer is Charles Bachman<\/p>\n
5. Which type of data can be stored in the database?
\na) Image oriented data
\nb) Text, files containing data
\nc) Data in the form of audio or video
\nd) All of the above<\/p>\n
The correct answer is All of the above<\/p>\n
6. In which of the following formats data is stored in the database management system?
\na) Image
\nb) Text
\nc) Table
\nd) Graph
\nThe correct answer is Table<\/span><\/span><\/span><\/p>\n7. Which of the following is not a type of database?
\na) Hierarchical
\nb) Network
\nc) Distributed
\nd) Decentralized
\nThe correct answer is Decentralized<\/span><\/span><\/span><\/p>\n8. Which of the following is not an example of DBMS?
\na) MySQL
\nb) Microsoft Acess
\nc) IBM DB2
\nd) Google
\nThe correct answer is Google<\/span><\/span><\/span><\/p>\n9. Which of the following is a feature of DBMS?
\na) Minimum Duplication and Redundancy of Data
\nb) High Level of Security
\nc) Single-user Access only
\nd) Support ACID Property
\nThe correct answer is Single-user Access only<\/span><\/span><\/span><\/p>\n10. Which of the following is a feature of the database?
\na) No-backup for the data stored
\nb) User interface provided
\nc) Lack of Authentication
\nd) Store data in multiple locations
\nThe correct answer is User interface provided<\/span><\/span><\/span><\/p>\n11. Which of the following is not a function of the database?
\na) Managing stored data
\nb) Manipulating data
\nc) Security for stored data
\nd) Analysing code
\nThe correct answer is Analysing code<\/span><\/span><\/span><\/p>\n12. Which of the following is a function of the DBMS?
\na) Storing data
\nb) Providing multi-users access control
\nc) Data Integrity
\nd) All of the above
\nThe correct answer is All of the above<\/span><\/span><\/span><\/p>\n13. Which of the following is a component of the DBMS?
\na) Data
\nb) Data Languages
\nc) Data Manager
\nd) All of the above
\nThe correct answer is All of the above<\/span><\/span><\/span><\/p>\n14. Which of the following is known as a set of entities of the same type that share same properties, or attributes?
\na) Relation set
\nb) Tuples
\nc) Entity set
\nd) Entity Relation model
\nThe correct answer is Entity set<\/span><\/span><\/p>\n15. What is information about data called?
\na) Hyper data
\nb) Tera data
\nc) Meta data
\nd) Relations
\nThe correct answer is Meta data<\/span><\/span><\/p>\n16. What does an RDBMS consist of?
\na) Collection of Records
\nb) Collection of Keys
\nc) Collection of Tables
\nd) Collection of Fields
\nThe correct answer is Collection of Tables<\/span><\/span><\/p>\n17. The values appearing in given attributes of any tuple in the referencing relation must likewise occur in specified attributes of at least one tuple in the referenced relation, according to _____________________ integrity constraint.
\na) Referential
\nb) Primary
\nc) Referencing
\nd) Specific
\nThe correct answer is Referential<\/span><\/span><\/p>\n18. _____________ is a hardware component that is most important for the operation of a database management system.
\na) Microphone
\nb) High speed, large capacity disk to store data
\nc) High-resolution video display
\nd) Printer
\nThe correct answer is High speed, large capacity disk to store data<\/span><\/span><\/p>\n19. The DBMS acts as an interface between ________________ and ________________ of an enterprise-class system.
\na) Data and the DBMS
\nb) Application and SQL
\nc) Database application and the database
\nd) The user and the software
\nThe correct answer is Database application and the database<\/span><\/span><\/p>\n20. The ability to query data, as well as insert, delete, and alter tuples, is offered by ____________
\na) TCL (Transaction Control Language)
\nb) DCL (Data Control Language)
\nc) DDL (Data Definition Langauge)
\nd) DML (Data Manipulation Langauge)
\nThe correct answer is DML (Data Manipulation Langauge)<\/span><\/span><\/p>\n21. ______________ is a set of one or more attributes taken collectively to uniquely identify a record.
\na) Primary Key
\nb) Foreign key
\nc) Super key
\nd) Candidate key
\nThe correct answer is Super key<\/span><\/span><\/p>\n22. Which command is used to remove a relation from an SQL?
\na) Drop table
\nb) Delete
\nc) Purge
\nd) Remove
\nThe correct answer is Drop table<\/span><\/span><\/p>\n23. Which of the following set should be associated with weak entity set for weak entity to be meaningful?
\na) Neighbour set
\nb) Strong entity set
\nc) Owner set
\nd) Identifying set
\nThe correct answer is Identifying set<\/span><\/span><\/p>\n24. Which of the following command is correct to delete the values in the relation teaches?
\na) Delete from teaches;
\nb) Delete from teaches where Id =\u2019Null\u2019;
\nc) Remove table teaches;
\nd) Drop table teaches;
\nThe correct answer is Delete from teaches;<\/span><\/span><\/p>\n25. Procedural language among the following is __________
\na) Domain relational calculus
\nb) Tuple relational calculus
\nc) Relational algebra
\nd) Query language
\nThe correct answer is Relational algebra<\/span><\/span><\/p>\n26. _________________ operations do not preserve non-matched tuples.
\na) Left outer join
\nb) Inner join
\nc) Natural join
\nd) Right outer join
\nThe correct answer is Inner join<\/span><\/span><\/p>\n27. Which forms have a relation that contains information about a single entity?
\na) 4NF
\nb) 2NF
\nc) 5NF
\nd) 3NF
\nThe correct answer is 4NF<\/span><\/span><\/p>\n28. The top level of the hierarchy consists of ______ each of which can contain _____.
\na) Schemas, Catalogs
\nb) Schemas, Environment
\nc) Environment, Schemas
\nd) Catalogs, Schemas
\nThe correct answer is Catalogs, Schemas<\/span><\/p>\n29. _______ indicates the maximum number of entities that can be involved in a relationship.
\na) Greater Entity Count
\nb) Minimum cardinality
\nc) Maximum cardinality
\nd) ERD
\nThe correct answer is Maximum cardinality<\/span><\/span><\/p>\n30. The user IDs can be added or removed using which of the following fixed roles?
\na) db_sysadmin
\nb) db_accessadmin
\nc) db_securityadmin
\nd) db_setupadmin
\nThe correct answer is db_accessadmin<\/span><\/span><\/p>\n31. Why the following statement is erroneous?<\/p>\n
\n
\n
\n
\n
\n
\n
\n
SELECT<\/span> dept_name,<\/span> ID,<\/span> avg (<\/span>salary)<\/span>\r\nFROM<\/span> instructor\r\nGROUP<\/span> BY<\/span> dept_name;<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\na) Dept_id should not be used in group by clause
\nb) Group by clause is not valid in this query
\nc) Avg(salary) should not be selected
\nd) None
\nThe correct answer is Dept_id should not be used in group by clause<\/span><\/span><\/p>\n32. The traditional storage of data organized by the customer, stored in separate folders in filing cabinets is an example of ______________ type of \u2018database\u2019 management system.
\na) Object-oriented database management system
\nb) Relational database management system
\nc) Network database management system
\nd) Hierarchical database management system
\nThe correct answer is Hierarchical database management system<\/span><\/span><\/p>\n33. After groups have been established, SQL applies predicates in the ___________ clause, allowing aggregate functions to be used.
\na) Where
\nb) Having
\nc) Group by
\nd) With
\nThe correct answer is With<\/span><\/span><\/p>\n34. Which of the following is not the utility of DBMS?
\ni) Backup ii) Loading iii) Process Organization iv) File organization
\na) i, ii, and iv only
\nb) i, ii and iii only
\nc) i, iii and iv only
\nd) All i, ii, iii, and iv
\nThe correct answer is i, ii, and iv only<\/span><\/span><\/p>\n35. What does a foreign key combined with a primary key create?
\na) Network model between the tables that connect them
\nb) Parent-Child relationship between the tables that connects them
\nc) One to many relationship between the tables that connects them
\nd) All of the mentioned
\nThe correct answer is Network model between the tables that connect them<\/span><\/span><\/p>\n36. Which of the following is correct according to the technology deployed by DBMS?
\na) Pointers are used to maintain transactional integrity and consistency
\nb) Cursors are used to maintain transactional integrity and consistency
\nc) Locks are used to maintain transactional integrity and consistency
\nd) Triggers are used to maintain transactional integrity and consistency
\nThe correct answer is Locks are used to maintain transactional integrity and consistency<\/span><\/span><\/p>\n37. Which of the following is correct regarding the file produced by a spreadsheet?
\na) can be used as it is by the DBMS
\nb) stored on disk in an ASCII text format
\nc) all of the mentioned
\nd) none of the mentioned
\nThe correct answer is can be used as it is by the DBMS<\/span><\/p>\n38. What is the function of the following command?<\/p>\n
Delete from r where P;<\/pre>\na) Clears entries from relation
\nb) Deletes relation
\nc) Deletes particular tuple from relation
\nd) All of the mentioned
\nThe correct answer is Deletes particular tuple from relation<\/span><\/p>\n39. ______ resembles Create view.
\na) Create table . . . as
\nb) Create view as
\nc) Create table . . .like
\nd) With data
\nThe correct answer is The \u2018create table\u2026 as\u2019 statement is similar to the \u2018create view\u2026 as\u2019 statement in that both are defined with queries. The main distinction is that table contents are set when the table is built, whereas view contents always reflect the current query result.<\/span><\/p>\n40. The query specifying the SQL view is said to be updatable if it meets which of the following conditions?
\na) select clause contains relation attribute names but not have expressions, aggregates, or distinct specification
\nb) from clause has 1 relation
\nc) query does not have group by or having clause
\nd) All of the mentioned
\nThe correct answer is All of the mentioned<\/span><\/p>\n41. When the \u201cROLLUP\u201d operator for expression or columns within a \u201cGROUP BY\u201d clause is used?
\na) Find the groups that make up the subtotal in a row
\nb) Create group-wise grand totals for the groups indicated in a GROUP BY clause
\nc) Group expressions or columns specified in a GROUP BY clause in one direction, from right to left, for computing the subtotals
\nd) To produce a cross-tabular report for computing subtotals by grouping phrases or columns given within a GROUP BY clause in all available directions
\nThe correct answer is Group expressions or columns specified in a GROUP BY clause in one direction, from right to left, for computing the subtotals<\/span><\/p>\n42. Which of the following is the best way to represent the attributes in a large db?
\na) Dot representation
\nb) Concatenation
\nc) Relational-and
\nd) All of the mentioned
\nThe correct answer is Concatenation<\/span><\/p>\n43. Which of the following is the subset of SQL commands used to manipulate Oracle Structures, including tables?
\na) Data Described Language
\nb) Data Retrieval Language
\nc) Data Manipulation Language
\nd) Data Definition Language
\nThe correct answer is Data Definition Language<\/span><\/p>\n44. Which of the following functions construct histograms and use buckets for ranking?
\na) Ntil()
\nb) Newtil()
\nc) Rank()
\nd) All of the mentioned
\nThe correct answer is Ntil()<\/span><\/p>\n45. __________ command is used in SQL to issue multiple CREATE TABLE, CREATE VIEW and GRANT statements in a single transaction.
\na) CREATE CLUSTER
\nb) CREATE PACKAGE
\nc) CREATE SCHEMA
\nd) All of the mentioned
\nThe correct answer is CREATE SCHEMA<\/span><\/p>\n46. Which of the following key is required in to handle the data when the encryption is applied to the data so that the unauthorised user cannot access the data?
\na) Primary key
\nb) Authorised key
\nc) Encryption key
\nd) Decryption key
\nThe correct answer is Decryption key<\/span><\/p>\n47. Which of the following is known as the process of viewing cross-tab with a fixed value of one attribute?
\na) Dicing
\nb) Pivoting
\nc) Slicing
\nd) Both Pivoting and Dicing
\nThe correct answer is Slicing<\/span><\/p>\n48. For designing a normal RDBMS which of the following normal form is considered adequate?
\na) 4NF
\nb) 3NF
\nc) 2NF
\nd) 5NF
\nThe correct answer is 3 NF<\/span><\/p>\n49. Which of the following is popular for applications such as storage of log files in a database management system since it offers the best write performance?
\na) RAID level 0
\nb) RAID level 1
\nc) RAID level 2
\nd) RAID level 3
\nThe correct answer is RAID level 1<\/span><\/p>\n50. Which of the following represents a query in the tuple relational calculus?
\na) { }{P(t) | t }
\nb) {t | P(t)}
\nc) t | P() | t
\nd) All of the mentioned
\nThe correct answer is {t | P(t)}<\/p>\n
Download Entri App\u00a0 for more topic wise practice papers\u00a0<\/strong><\/a><\/p>\nI hope this article was helpful. The key point to clear an exam lies in methodical and planned preparation. If you are a candidate who wants to pursue your dream career and looking for a good start, our\u00a0\u00a0<\/span>Entri app<\/span><\/strong><\/a> has got it covered for you. Our team will help you with content and insights related to the topics of your concern. Subscribe to our app today and enrol yourself into various programmes our app offers. Tune in to the app to stay updated regarding various aspects of the subject you are interested in. Feel free to post any queries and doubts in the comment section. We will try our best to reach out. Push away all those self-doubts and negative thoughts. Try to have a clear vision. Ask yourself why you want this. Focus on the good and work hard. There is a saying that goes like this, Get up and set your shoulders to the wheel-how long is life for you? as you have come to this world leave some mark behind or where is the difference between your trees and stones they too come into existence decay and die. Each day is a precious gift bestowed upon us so make it count. Work on yourself. Stop procrastinating. Today is the day, hope for the best. Good luck.<\/span><\/p>\n