Table of Contents

    Database Concepts MCQs

    November 30, -0001 339 views

    MCQ Section

    MCQ 1
    Which of the following is an example of a database management system?
    MCQ 2
    What is the purpose of a DBMS?
    MCQ 3
    Which type of database became dominant in the 1980s?
    MCQ 4
    What are NoSQL databases?
    MCQ 5
    What is the purpose of data definition in a DBMS?
    MCQ 6
    Which function of a DBMS involves insertion, modification, and deletion of actual data?
    MCQ 7
    What does the retrieval function of a DBMS involve?
    MCQ 8
    What is the purpose of administration in a DBMS?
    MCQ 9
    What does a database system refer to?
    MCQ 10
    What is a database?
    MCQ 11
    Which of the following is true about database servers?
    MCQ 12
    What are hardware database accelerators used for?
    MCQ 13
    How do modern DBMSs typically rely on operating systems?
    MCQ 14
    How can databases and DBMSs be categorized?
    MCQ 15
    Which data model departed from the use of pointers to follow relationships between records?
    MCQ 16
    What type of tables does the relational model employ?
    MCQ 17
    When did relational systems become widely deployed?
    MCQ 18
    What are object databases designed to overcome?
    MCQ 19
    What characterizes NoSQL databases?
    MCQ 20
    What was the goal of NewSQL databases?
    MCQ 21
    What was the main characteristic of navigational databases?
    MCQ 22
    Who founded the Database Task Group within CODASYL?
    MCQ 23
    Which approach became known as the CODASYL approach?
    MCQ 24
    What did later systems add to CODASYL databases?
    MCQ 25
    Which term was popularized by Charles Bachman's Turing Award presentation?
    MCQ 26
    What was the classification of IBM's DBMS, Information Management System (IMS)?
    MCQ 27
    What was the classification of IDMS and Cincom Systems' TOTAL databases?
    MCQ 28
    When did IMS enter the market?
    MCQ 29
    What was the main drawback of CODASYL databases?
    MCQ 30
    Which model of data navigation did IMS use?
    MCQ 31
    What was one of the main motivations behind Edgar F.
    Codd's development of the relational model?
    MCQ 32
    What did Codd propose in his groundbreaking paper, "A Relational Model of Data for Large Shared Data Banks"?
    MCQ 33
    What is the purpose of primary keys in the relational model?
    MCQ 34
    How are tables in the relational model joined?
    MCQ 35
    What are virtual tables called in the relational model?
    MCQ 36
    Which mathematical system provided the basis for the operations in the relational model?
    MCQ 37
    What was the benefit of using explicit identifiers as primary keys in the relational model?
    MCQ 38
    What was one advantage of the relational model in terms of database reorganization?
    MCQ 39
    What is the term used in the relational model to represent a row in a table?
    MCQ 40
    What did the process of normalization in the relational model aim to achieve?
    MCQ 41
    Which model did Codd criticize for departing from the mathematical foundations of the relational model?
    MCQ 42
    What did the use of explicit identifiers in the relational model enable in terms of query optimization?
    MCQ 43
    How did the relational model differ from the hierarchic and network models in terms of data storage?
    MCQ 44
    What term is commonly used to refer to tables in the relational model?
    MCQ 45
    What aspect of the relational model contributed to its expressiveness and integrity?
    MCQ 46
    In the relational approach, how is data related to users typically organized?
    MCQ 47
    How did Codd change the way applications assembled data from multiple records in the relational approach?
    MCQ 48
    What is the process called when the database management system determines the most efficient access path for a query?
    MCQ 49
    What was the name of the project initiated by Eugene Wong and Michael Stonebraker at Berkeley, influenced by Codd's work?
    MCQ 50
    Which company developed PRTV and Business System 12, early implementations of the relational model?
    MCQ 51
    Which of the following is not an implementation of the relational model?
    MCQ 52
    What was MICRO Information Management System based on?
    MCQ 53
    What type of computers did the MICRO Information Management System run on?
    MCQ 54
    Until when did the MICRO Information Management System remain in production?
    MCQ 55
    Which organization or department utilized the MICRO Information Management System?
    MCQ 56
    What was the underlying philosophy behind building database systems with integrated hardware and software?
    MCQ 57
    Which of the following was an example of an early attempt at an integrated database system in the 1970s and 1980s?
    MCQ 58
    Why were specialized database machines generally unsuccessful in the long term?
    MCQ 59
    Which company pursued the idea of integrated hardware and software in database systems, even in recent times?
    MCQ 60
    What was the name of IBM's prototype system based on Codd's concepts in the 1970s?
    MCQ 61
    Who beat IBM to the market with the first commercial version of their database system in 1979?
    MCQ 62
    What is the modern name for the database system originally known as Postgres?
    MCQ 63
    Where was Mimer SQL developed in the mid-1970s?
    MCQ 64
    Which data model emerged in 1976 and gained popularity for database design?
    MCQ 65
    How are the entity–relationship model and the relational model related?
    MCQ 66
    Which popular database software was lightweight and user-friendly for desktop computers in the 1980s?
    MCQ 67
    What term describes the shift in the 1990s where data in databases started being treated as objects?
    MCQ 68
    What term is used to describe the inconvenience of translating between programmed objects and database tables?
    MCQ 69
    What type of databases attempt to solve the object–relational impedance mismatch by providing an object-oriented language?
    MCQ 70
    What are libraries called that attempt to solve the object–relational impedance mismatch by providing mapping between objects and database tables?
    MCQ 71
    What type of databases are designed to handle structured document-oriented data and allow querying based on XML document attributes?
    MCQ 72
    What characteristics are commonly associated with NoSQL databases?
    MCQ 73
    According to the CAP theorem, what guarantees cannot be simultaneously provided in a distributed system?
    MCQ 74
    What class of modern relational databases aims to combine the scalable performance of NoSQL systems with the ACID guarantees of traditional databases?
    MCQ 75
    Which term is used to describe the reduced level of data consistency in NoSQL databases that provide availability and partition tolerance?
    MCQ 76
    Which type of database primarily resides in main memory and is used when response time is critical?
    MCQ 77
    What type of database includes an event-driven architecture and can respond to conditions both inside and outside the database?
    MCQ 78
    Which type of database relies on cloud technology, with the database and its DBMS residing remotely in the cloud?
    MCQ 79
    What type of database archives data from operational databases and external sources, serving as a central source for data analysis by managers and end-users?
    MCQ 80
    Which type of database combines logic programming with a relational database?
    MCQ 81
    What type of database spans multiple computers, where both the data and the DBMS are distributed?
    MCQ 82
    Which type of database is designed for storing, retrieving, and managing document-oriented or semi-structured information?
    MCQ 83
    What type of database system is tightly integrated with an application software, hiding the DBMS from end-users and requiring little maintenance?
    MCQ 84
    What are databases consisting of data developed by individual end-users called?
    MCQ 85
    What type of database system integrates multiple autonomous databases, providing them with an integrated conceptual view?
    MCQ 86
    Which type of database uses graph structures with nodes, edges, and properties to represent and store information?
    MCQ 87
    Which type of database allows modeling, storage, and retrieval of large multi-dimensional arrays, such as satellite images and climate simulation output?
    MCQ 88
    In which type of database can any word or piece of text be hyperlinked to another object, allowing for convenient organization of large amounts of disparate information?
    MCQ 89
    Which type of database is designed for knowledge management, providing means for the collection, organization, and retrieval of knowledge?
    MCQ 90
    What type of database can be carried on or synchronized from a mobile computing device?
    MCQ 91
    Which type of database stores detailed data about the operations of an organization and processes high volumes of updates using transactions?
    MCQ 92
    Which type of database architecture seeks to improve performance through parallelization for tasks such as loading data, building indexes, and evaluating queries?
    MCQ 93
    Which type of database employs fuzzy logic to draw inferences from imprecise data?
    MCQ 94
    Which type of database can store data with multidimensional features and allows for location-based queries?
    MCQ 95
    Which type of database has built-in time aspects, including a temporal data model and a temporal version of SQL?
    MCQ 96
    What is the primary function of a database management system (DBMS)?
    MCQ 97
    Which component of a DBMS describes the metadata and provides information about the structure and organization of the database?
    MCQ 98
    What feature of a DBMS ensures that multiple users can access and modify the database concurrently without conflicts?
    MCQ 99
    What is the purpose of transaction management in a DBMS?
    MCQ 100
    Which component of a DBMS is responsible for ensuring that the database can be recovered in case of system failures or data corruption?
    MCQ 101
    What is the purpose of enforcing constraints in a DBMS?
    MCQ 102
    What feature of a DBMS allows authorized users to access and update the database from remote locations?
    MCQ 103
    What is the purpose of a DBMS's utilities, such as import, export, monitoring, and defragmentation?
    MCQ 104
    Which architecture allows the application to reside on a client desktop while the database resides on a server, enabling distributed processing?
    MCQ 105
    What is the purpose of a public application programming interface (API) provided by a DBMS?
    MCQ 106
    What is the purpose of an application program interface (API) in the context of a database?
    MCQ 107
    Which of the following is a commonly known API that aims to be database independent?
    MCQ 108
    Which type of language is used to define data types, create tables, and establish relationships in a database?
    MCQ 109
    What is the purpose of a data manipulation language (DML) in a database?
    MCQ 110
    Which language combines data definition, data manipulation, and query capabilities in a single language and is widely used for relational databases?
    MCQ 111
    Which query language is specifically designed for querying and manipulating object-oriented databases?
    MCQ 112
    Which query language is used for querying XML data in XML database systems and relational databases with XML capabilities?
    MCQ 113
    What additional functionality can a database language incorporate besides data manipulation and querying?
    MCQ 114
    Which type of language controls access to data in a database?
    MCQ 115
    Which type of language allows searching for information and computing derived information from a database?
    MCQ 116
    What is the responsibility of the database engine in a DBMS?
    MCQ 117
    What are the three layers of information stored in a database?
    MCQ 118
    Which component of the DBMS is responsible for ensuring efficient storage and configuration settings?
    MCQ 119
    In a DBMS, where does the database typically reside in terms of storage?
    MCQ 120
    What is the purpose of indexing in database storage?
    MCQ 121
    Which type of database storage structure is row-oriented?
    MCQ 122
    What is the purpose of materialized views in database storage?
    MCQ 123
    What are the downsides of materialized views?
    MCQ 124
    What is the purpose of replication in database storage?
    MCQ 125
    Which approach is commonly used for replicating an entire database?
    MCQ 126
    What is the primary challenge of updating replicated objects in database replication?
    MCQ 127
    Which component of the database contains information about the character encoding used to store data?
    MCQ 128
    What is the purpose of DBMS-specific configuration and storage engine management?
    MCQ 129
    Which type of database storage structure is optimized for column-wise data storage?
    MCQ 130
    What is the advantage of using multiple encodings in the same database?
    MCQ 131
    What is data virtualization?
    MCQ 132
    What is one of the drawbacks of data virtualization?
    MCQ 133
    What is the main focus of database security?
    MCQ 134
    What is database access control?
    MCQ 135
    How are database access controls typically set?
    MCQ 136
    What is the purpose of data security in a database?
    MCQ 137
    What is change and access logging in database security?
    MCQ 138
    What is the role of monitoring in database security?
    MCQ 139
    How does database security help organizations?
    MCQ 140
    What is the significance of database security in relation to privacy regulations?
    MCQ 141
    What are some security challenges in a virtualized database environment?
    MCQ 142
    How does data virtualization assist in privacy compliance?
    MCQ 143
    What is the primary focus of database security measures?
    MCQ 144
    How does data security contribute to safeguarding organizations?
    MCQ 145
    Why is database security important for organizations?
    MCQ 146
    What is a database transaction?
    MCQ 147
    What does the acronym ACID stand for in the context of database transactions?
    MCQ 148
    What is the purpose of database migration?
    MCQ 149
    What should be considered when planning a complex database migration?
    MCQ 150
    What is the purpose of database tuning?
    MCQ 151
    What is the role of a database administrator in building a database?
    MCQ 152
    What is the purpose of initializing a database?
    MCQ 153
    How is a database maintained after it is created and initialized?
    MCQ 154
    What is a primary consideration for changing database parameters?
    MCQ 155
    What is an important aspect of maintaining a database over time?
    MCQ 156
    What is the purpose of backup and restore operations in a database?
    MCQ 157
    How can static analysis techniques be applied to query languages in a database?
    MCQ 158
    What is the purpose of a database log?
    MCQ 159
    What is a query optimizer in a DBMS?
    MCQ 160
    What are tools or hooks in a DBMS used for?
    MCQ 161
    What is the purpose of "DevOps for database" offerings?
    MCQ 162
    What is the first task of a database designer in the database design process?
    MCQ 163
    What is an example of a popular approach for developing a data model?
    MCQ 164
    What does a successful data model accurately reflect?
    MCQ 165
    What is a key aspect of designing a good conceptual data model?
    MCQ 166
    What deep questions might be asked during the database design process?
    MCQ 167
    A) Can a customer also be a supplier?
    MCQ 168
    What is the role of terminology in a database design?
    MCQ 169
    Why is it important to capture the possible state of the external world in a data model?
    MCQ 170
    What is the role of terminology in a database design?
    MCQ 171
    Why is it important to capture the possible state of the external world in a data model?
    MCQ 172
    What is the purpose of producing a conceptual data model in the database design process?
    MCQ 173
    What is the output of the logical database design stage?
    MCQ 174
    What is the primary goal of normalization in the logical database design process? [Question 2]
    MCQ 175
    What is the goal of a query optimizer in a DBMS?
    MCQ 176
    What is data independence in the context of physical database design?
    MCQ 177
    What is the purpose of the database model in the database design process?
    MCQ 178
    What is the purpose of database configuration monitoring?
    MCQ 179
    What is the purpose of producing a conceptual data model in the database design process?
    MCQ 180
    What is the output of the logical database design stage?
    MCQ 181
    What is the primary goal of normalization in the logical database design process?
    MCQ 182
    What is the final stage of database design that considers performance, scalability, recovery, and security?
    MCQ 183
    What is data independence in the context of physical database design?
    MCQ 184
    What is the purpose of the database model in the database design process?
    MCQ 185
    Which database model is the most popular for general-purpose databases?
    MCQ 186
    What is the goal of normalization in the logical database design process?
    MCQ 187
    What is the purpose of physical database design?