MCQ | Database Management System (DBMS) Database Management System (DBMS) 1 / 53 Which forms simplifies and ensures that there are minimal data aggregates and repetitive groups: 3NF 1NF 2NF All of the mentioned 2 / 53 _____is not the data type of MS-Access. Number Form Memo Text 3 / 53 Which of the following gives a logical structure of the database graphically? Entity diagram Architectural representation Entity-Relationship diagram Database diagram 4 / 53 This key that uniquely identifies each record is called: Field Name Unique Key Primary Key Key Record 5 / 53 A relational database consists of a collection of Keys Tuples Fields Tables 6 / 53 Which SQL keyword is used to retrieve a maximum value? MAX TOP UPPER MOST 7 / 53 The server process that implements lock Manages functionality, is called Database Writer Process Manager processes Lock Manager Proceses Server Processes 8 / 53 A relationship is considered a: three-dimensional table one-dimensional table two-dimensional table Column 9 / 53 CREATE TABLE employee (name VARCHAR, id INTEGER ) What type of statement is this? Integrity constrain View DML DDL 10 / 53 The default data type in MS-Access if . . . Text Memo Data/Time Number 11 / 53 The primary key does not accept . . . Null Value Number Text None of above 12 / 53 Which of the following is generally used for performing tasks like creating the structure of the relations, deleting Relations? DML(Data Manipulation Language) DDL(Data Definition Language) Query Relational Schema 13 / 53 Which of the following is a group of one or more attributes that uniquely identifies a row? Determinant Relation Tuple Key 14 / 53 Which of the following is/are the main goals of a distributed database? All of the options are correct Reduced communication overhead Incremental growth Interconnection of database 15 / 53 The report can be generated by using data from... Table Forms Both Table And Query Query 16 / 53 The term "Data" refers to: The electronic representation of the information ( or data) Raw Facts and figures Basic information All of above 17 / 53 Tables in second normal form (2NF): Have all non key fields depend on the whole primary key Eliminate all hidden dependencies Have a composite key Eliminate the possibility of a insertion anomalies 18 / 53 Which of the following is not a database application? Oracle MS-Excel MS-Access FoxPro 19 / 53 Functional Dependencies are the types of constraints that are based on_____ Key revisited Key None of the mentioned Superset key 20 / 53 In a distributed Database reduction of redundancy is obtained by_____ None of the above Data Replication Data Sharing Data fragmentation 21 / 53 Storing a separate copy of the database at multiple locations is which of the following? Data Replication Horizontal Partitioning Vertical Partitioning Vertical Partitioning 22 / 53 The columns in a database table are called. .. field Memo record report 23 / 53 The UPDATE SQL clause can______ delete only one row at a time update only one row at a time update more than one row at a time delete more than one row at a time 24 / 53 In general, a file is basically a collection of all related_____ Fields Rows & Columns Records Database 25 / 53 A distributed database is a collection of data which belong to the same system but are spread over the of the network. None of the above Database, DBMS Physically, sites Logically, sites 26 / 53 The entity relationship set is represented in E-R diagram as Undivided rectangles Double diamonds Diamond Dashed lines 27 / 53 Which is a bottom-up approach to database design that design by examining the relationship between attributes: Decomposition Database modeling Normalization Functional dependency 28 / 53 The data type appropriate to store salary is. . Auto number Memo Text Currency 29 / 53 In the given query which of the keyword has to be inserted?INSERT INTO employee ___ (4,Alok,2000); Field Relation Table Values 30 / 53 An _______ is a set of entities of the same type that share the same properties, of attributes. Entity set Entity model Attribute set Relation set 31 / 53 The maximum size of the text field in MS. Access is . 255 6400 10 50 32 / 53 The term ________ is used to refer to a row Field Instance Tuple Attribute 33 / 53 Which of the following is not a DDL command? None of the option UPDATE TRUNCATE ALTER 34 / 53 ….. query changes the value in the main table both Select & Update Update None Select 35 / 53 Which of the following refers to the level of data abstraction that describes exactly how the data actually stored? File Level Conceptual Level Logical Level Physical Level 36 / 53 A Detail Management System is a type of _______ software. It is a kind of general software It is a kind of application software Its a type of system software Bot A and C 37 / 53 A data dictionary is repository that manages _________ Spell Checker Memory Metadata Data validator 38 / 53 The extension of the database file in MS Access is DBF DMB DBM MDB 39 / 53 Which is not a type of query? Search All the options are correct Select Update 40 / 53 The term "SQL" stands for Structured query language Standard query language Server-side query language : Sequential query language 41 / 53 A field that is used to uniquely define particular record in a table is called: Constraints Entity Relationship Primary Key 42 / 53 In MS Access data are stored In . . …. Table Form All of the options are correct Query 43 / 53 The term attributes refers to a________ of a table. Key Record Tuple Column 44 / 53 object of access is used to print formatted data. Form Table Query Report 45 / 53 Which-one ofthe following statements about normal forms is FALSE? BCNF is stricter than 3 NF Lossless, dependency –preserving decomposition into 3 NF is always possible Loss less, dependency – preserving decomposition into BCNF is always possible Any relation with two attributes is BCNF 46 / 53 Which data type provides storage for variable length and arbitrary format data? Hyperlink. Memo Text OLE object 47 / 53 Which of the following SQL statement is used to DELETE rows from a database table? . DROP REMOVE CLEAR DELETE 48 / 53 In the __________ normal form, a composite attribute is converted to individual attributes. Third Fourth First Second 49 / 53 With SQL, how do you select all the records from a table named "Persons" where the value of the column “FirstName” ends with an “a” ? SELECT * FROM Persons WHERE FirstName='a' SELECT * FROM Persons WHERE FirstName LIKE 'a%' SELECT * FROM Persons WHERE FirstName LIKE '%a' SELECT * FROM Persons WHERE FirstName='%a' 50 / 53 A........ key uniquely identifies a record. Foreign Primary None Composite 51 / 53 In the __________ normal form, a composite attribute is converted to individual attributes. Second First Third Fourth 52 / 53 Date/Time occupies . . . bytes of memory. 4 2 16 8 53 / 53 A table on the many side of a one to many or many to many relationship must: Have a single attribute key Be in Second Normal Form (2NF) Have a composite key Be in Third Normal Form (3NF) Your score isThe average score is 56% 0% Restart quiz