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