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