MCQ | Database Management System (DBMS) Database Management System (DBMS) 1 / 53Which of the following gives a logical structure of the database graphically? Entity diagram Entity-Relationship diagram Architectural representation Database diagram 2 / 53Which is not a type of query? Search All the options are correct Update Select 3 / 53_____is not the data type of MS-Access. Memo Number Text Form 4 / 53In the __________ normal form, a composite attribute is converted to individual attributes. Third Fourth Second First 5 / 53The UPDATE SQL clause can______ delete more than one row at a time update more than one row at a time update only one row at a time delete only one row at a time 6 / 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 7 / 53The term attributes refers to a________ of a table. Key Column Record Tuple 8 / 53In general, a file is basically a collection of all related_____ Rows & Columns Database Fields Records 9 / 53An _______ is a set of entities of the same type that share the same properties, of attributes. Relation set Entity set Attribute set Entity model 10 / 53Which of the following SQL statement is used to DELETE rows from a database table? . DROP REMOVE CLEAR DELETE 11 / 53….. query changes the value in the main table Select None both Select & Update Update 12 / 53Tables in second normal form (2NF): Eliminate the possibility of a insertion anomalies Eliminate all hidden dependencies Have all non key fields depend on the whole primary key Have a composite key 13 / 53Functional Dependencies are the types of constraints that are based on_____ Key Key revisited Superset key None of the mentioned 14 / 53A relationship is considered a: Column one-dimensional table three-dimensional table two-dimensional table 15 / 53The data type appropriate to store salary is. . Auto number Currency Memo Text 16 / 53The maximum size of the text field in MS. Access is . 50 255 6400 10 17 / 53A table on the many side of a one to many or many to many relationship must: Be in Third Normal Form (3NF) Have a single attribute key Be in Second Normal Form (2NF) Have a composite key 18 / 53Which of the following is not a DDL command? None of the option TRUNCATE ALTER UPDATE 19 / 53Which of the following is a group of one or more attributes that uniquely identifies a row? Tuple Determinant Relation Key 20 / 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 LIKE 'a%' SELECT * FROM Persons WHERE FirstName LIKE '%a' SELECT * FROM Persons WHERE FirstName='%a' SELECT * FROM Persons WHERE FirstName='a' 21 / 53In a distributed Database reduction of redundancy is obtained by_____ Data Sharing Data Replication None of the above Data fragmentation 22 / 53Which of the following refers to the level of data abstraction that describes exactly how the data actually stored? Physical Level File Level Logical Level Conceptual Level 23 / 53The term "Data" refers to: The electronic representation of the information ( or data) Raw Facts and figures Basic information All of above 24 / 53The term "SQL" stands for Standard query language Server-side query language : Sequential query language Structured query language 25 / 53Which is a bottom-up approach to database design that design by examining the relationship between attributes: Functional dependency Database modeling Normalization Decomposition 26 / 53Which forms simplifies and ensures that there are minimal data aggregates and repetitive groups: 1NF 3NF 2NF All of the mentioned 27 / 53Which of the following is generally used for performing tasks like creating the structure of the relations, deleting Relations? Relational Schema DML(Data Manipulation Language) DDL(Data Definition Language) Query 28 / 53A relational database consists of a collection of Keys Tuples Tables Fields 29 / 53Which of the following is not a database application? MS-Access FoxPro Oracle MS-Excel 30 / 53The report can be generated by using data from... Query Table Forms Both Table And Query 31 / 53In MS Access data are stored In . . …. Query Table Form All of the options are correct 32 / 53The primary key does not accept . . . None of above Null Value Text Number 33 / 53Which of the following is/are the main goals of a distributed database? Interconnection of database All of the options are correct Reduced communication overhead Incremental growth 34 / 53A Detail Management System is a type of _______ software. Its a type of system software It is a kind of application software Bot A and C It is a kind of general software 35 / 53Which data type provides storage for variable length and arbitrary format data? Memo OLE object Hyperlink. Text 36 / 53CREATE TABLE employee (name VARCHAR, id INTEGER ) What type of statement is this? Integrity constrain View DML DDL 37 / 53A........ key uniquely identifies a record. None Foreign Primary Composite 38 / 53The default data type in MS-Access if . . . Memo Data/Time Number Text 39 / 53In the given query which of the keyword has to be inserted?INSERT INTO employee ___ (4,Alok,2000); Relation Values Field Table 40 / 53Date/Time occupies . . . bytes of memory. 4 8 16 2 41 / 53A field that is used to uniquely define particular record in a table is called: Primary Key Entity Relationship Constraints 42 / 53The extension of the database file in MS Access is DBM DMB MDB DBF 43 / 53In the __________ normal form, a composite attribute is converted to individual attributes. Fourth First Third Second 44 / 53This key that uniquely identifies each record is called: Key Record Field Name Unique Key Primary Key 45 / 53The entity relationship set is represented in E-R diagram as Diamond Dashed lines Double diamonds Undivided rectangles 46 / 53Which-one ofthe following statements about normal forms is FALSE? BCNF is stricter than 3 NF Any relation with two attributes is BCNF Loss less, dependency – preserving decomposition into BCNF is always possible Lossless, dependency –preserving decomposition into 3 NF is always possible 47 / 53The columns in a database table are called. .. record report Memo field 48 / 53A data dictionary is repository that manages _________ Spell Checker Metadata Memory Data validator 49 / 53Which SQL keyword is used to retrieve a maximum value? TOP UPPER MOST MAX 50 / 53object of access is used to print formatted data. Report Table Query Form 51 / 53The term ________ is used to refer to a row Tuple Instance Attribute Field 52 / 53Storing a separate copy of the database at multiple locations is which of the following? Vertical Partitioning Data Replication Horizontal Partitioning Vertical Partitioning 53 / 53The server process that implements lock Manages functionality, is called Manager processes Server Processes Database Writer Process Lock Manager Proceses Your score isThe average score is 73% 0% Restart quiz