Which normal form is considered as adequate for usual database design? (A) 2NF (B) 3NF (C) 4NF (D) 5NF

Which normal form is considered as adequate for usual database design? (A) 2NF (B) 3NF (C) 4NF (D) 5NF
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(B) 3NF
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For a database relation R(a, b, c, d) where the domains of a, b, c, d include only the atomic values. The functional dependency a → c, b → d holds in the following relation (A) In 1NF not in 2NF (B) In 2NF not in 3NF (C) In 3NF (D) In 1NF

Description : For a database relation R(a, b, c, d) where the domains of a, b, c, d include only the atomic values. The functional dependency a → c, b → d holds in the following relation (A) In 1NF not in 2NF (B) In 2NF not in 3NF (C) In 3NF (D) In 1NF

Last Answer : (A) In 1NF not in 2NF 

A B C is a set of attributes. The functional dependency is as follows AB -> B AC -> C C -> B a) is in 1NF b) is in 2NF c) is in 3NF d) is in BCNF

Description : A B C is a set of attributes. The functional dependency is as follows AB -> B AC -> C C -> B a) is in 1NF b) is in 2NF c) is in 3NF d) is in BCNF

Last Answer : a) is in 1NF

4NF stands for .. A) Fourth Normal File B) Fourth Normal Form C) Fourth Normal Fraction D) Fourth Negative File

Description : 4NF stands for .. A) Fourth Normal File B) Fourth Normal Form C) Fourth Normal Fraction D) Fourth Negative File

Last Answer : B) Fourth Normal Form

Which normal form is considered adequate for normal relationship database design?

Description : Which normal form is considered adequate for normal relationship database design?  A) 2 NF B) 3 NF C) 4 NF D) 5 NF

Last Answer : Which normal form is considered adequate for normal relationship database design?   3 NF 

Select the ‘False’ statement from the following statements about Normal Forms: (A) Lossless preserving decomposition into 3NF is always possible (B) Lossless preserving decomposition into BCNF is always possible (C) Any relation with two attributes is in BCNF (D) BCNF is stronger than 3NF

Description : Select the ‘False’ statement from the following statements about Normal Forms: (A) Lossless preserving decomposition into 3NF is always possible (B) Lossless preserving decomposition into BCNF is always possible (C) Any relation with two attributes is in BCNF (D) BCNF is stronger than 3NF

Last Answer : (B) Lossless preserving decomposition into BCNF is always possible

The Relation Vendor Order (V_no, V_ord_no, V_name, Qty_sup, unit_price) is in 2NF because : (A) Non key attribute V_name is dependent on V_no which is part of composite key (B) Non key attribute V_name is dependent on Qty_sup (C) key attribute Qty_sup is dependent on primary_key unit price (D) key attribute V_ord_no is dependent on primary_key unit price

Description : The Relation Vendor Order (V_no, V_ord_no, V_name, Qty_sup, unit_price) is in 2NF because : (A) Non key attribute V_name is dependent on V_no which is part of composite key (B) ... Qty_sup is dependent on primary_key unit price (D) key attribute V_ord_no is dependent on primary_key unit price

Last Answer : (A) Non key attribute V_name is dependent on V_no which is part of composite key

MDP stands for A) Master Development Plan B) Master Design Program C) Mandatory Database Program D) Master Database Plan

Description : MDP stands for A) Master Development Plan B) Master Design Program C) Mandatory Database Program D) Master Database Plan

Last Answer : A) Master Development Plan

The one guideline to be followed while designing the database is A) A database design may be ambiguous. B) Unrelated data should be in the same table so that updating the data will be easy. C) It should avoid/reduce the redundancy. D) An entity should not have attributes.

Description : The one guideline to be followed while designing the database is A) A database design may be ambiguous. B) Unrelated data should be in the same table so that updating the data will be easy. C) It should avoid/reduce the redundancy. D) An entity should not have attributes.

Last Answer : C) It should avoid/reduce the redundancy.

………………… approach reduces time and effort required for design and lesser risk in database management. A) Single global database B) Top-down approach C) Multiple databases D) None of the above

Description : ………………… approach reduces time and effort required for design and lesser risk in database management. A) Single global database B) Top-down approach C) Multiple databases D) None of the above

Last Answer : C) Multiple databases

For a database relation R(A,B,C,D) where the domains of A,B,C and D include only atomic values, only the following functional dependencies and those that can be inferred from them are: A→C B→D The relation R is in ................ (1) First normal form but not in second normal form (2) Both in first normal form as well as in second normal form (3) Second normal form but not in third normal form (4) Both in second normal form as well as in third normal form

Description : For a database relation R(A,B,C,D) where the domains of A,B,C and D include only atomic values, only the following functional dependencies and those that can be inferred from them are: A→C B→D The ... form but not in third normal form (4) Both in second normal form as well as in third normal form

Last Answer : First normal form but not in second normal form

What is 5NF?

Description : What is 5NF?

Last Answer : A Relation schema R is said to be 5NF if for every join dependency {R1, R2, …,Rn} that holds R, one the following is true ∙ Ri = R for some i. ∙ The join dependency is implied by the set of FD, over R in which the left side is key of R.

What is 4NF?

Description : What is 4NF?

Last Answer : A relation schema R is said to be in 4NF if for every Multivalued dependency X Y that holds over R, one of following is true ∙ X is subset or equal to (or

Consider a 3-puzzle where, like in the usual 8-puzzle game, a tile can only move to an adjacent empty space. Given the initial state which of the following state cannot be reached?

Description : Consider a 3-puzzle where, like in the usual 8-puzzle game, a tile can only move to an adjacent empty space. Given the initial state  which of the following state cannot be reached? 

Last Answer : Answer: C

Consider the following statements: (a) Revised simplex method requires lesser computations than the simplex method. (b) Revised simplex method automatically generates the inverse of the current basis matrix. (c) Less number of entries are needed in each table of revised simplex method than usual simplex method. Which of these statements are correct? (A) (a) and (b) only (B) (a) and (c) only (C) (b) and (c) only (D) (a), (b) and (c)

Description : Consider the following statements: (a) Revised simplex method requires lesser computations than the simplex method. (b) Revised simplex method automatically generates the inverse of the current basis matrix. (c) Less number of entries are needed ... c) only (C) (b) and (c) only (D) (a), (b) and (c)

Last Answer : (D) (a), (b) and (c)

What is 2NF?

Description : What is 2NF?

Last Answer : A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.

Refer the points as listed below: (a) What are the operator precedence rules ? (b) What are the operator associativity rules ? (c) What is the order of operand evaluation ? (d) Are there restrictions on operand evaluation side effects ? Which of the above must be considered as primary design issues for arithmetic expressions ? (A) (a), (b) and (c) (B) (a), (c) and (d) (C) (a), (b) and (d) (D) (a), (b), (c) and (d)

Description : Refer the points as listed below: (a) What are the operator precedence rules ? (b) What are the operator associativity rules ? (c) What is the order of operand evaluation ? (d) Are there restrictions on operand evaluation side effects ? ... (d) (C) (a), (b) and (d) (D) (a), (b), (c) and (d)

Last Answer : (D) (a), (b), (c) and (d)

What is 3NF?

Description : What is 3NF?

Last Answer : A relation schema R is in 3NF if it is in 2NF and for every FD X A either of the following is true ∙ X is a Super-key of R. ∙ A is a prime attribute of R. In other wo

Ingres is a ........................ A) Socket B) Compiler C) Database D) Web server

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Last Answer : C) Database

In JDBC ........................ imports all Java classes concerned with database connectivity. A) javax.sql.* B) java.mysql.* C) java.sql.* D) com.*

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Last Answer : C) java.sql.*

In order to run JSP .................... is required. A) Mail Server B) Applet viewer C) Java Web Server D) Database connection

Description : In order to run JSP .................... is required. A) Mail Server B) Applet viewer C) Java Web Server D) Database connection

Last Answer : C) Java Web Server

State whether true or false. i) Multithreading is useful for application that perform a number of essentially independent tasks that do not be serialized. ii) An example of multithreading is a database server that listens for and process numerous client request. A) i-True, ii-False B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False

Description : State whether true or false. i) Multithreading is useful for application that perform a number of essentially independent tasks that do not be serialized. ii) An example of multithreading is a database server that listens for ... B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False

Last Answer : B) i-True, ii-True

For using a specific database …………… command is used. A) use database B) databasename use C) Both A &B D) None of them

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Last Answer : A) use database

Centralizing the integrity checking directly under the DBMS ………….. Duplication and ensures the consistency and validity of the database. A) Increases B) Skips C) Does not reduce D) Reduces

Description : Centralizing the integrity checking directly under the DBMS ………….. Duplication and ensures the consistency and validity of the database. A) Increases B) Skips C) Does not reduce D) Reduces

Last Answer : D) Reduces

…………… database is used as template for all databases created. A) Master B) Model C) Tempdb D) None of the above

Description : …………… database is used as template for all databases created. A) Master B) Model C) Tempdb D) None of the above

Last Answer : B) Model

To delete a database ................... command is used A) delete database database_name B) Delete database_name C) drop database database_name D) drop database_name

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Which of the following is/are the Database server functions? i) Data management ii) Transaction management iii) Compile queries iv) Query optimization A) i, ii, and iv only B) i, ii and iii only C) ii, iii and iv only D) All i, ii, iii, and iv

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Last Answer : A) i, ii, and iv only

The reasons leading to popularity of client-server systems are: A) More powerful workstations on LANs B) Needed for graphical user interfaces of end users. C) Remove computing load for presentation services from the system managing a shared database resource. D) All

Description : The reasons leading to popularity of client-server systems are: A) More powerful workstations on LANs B) Needed for graphical user interfaces of end users. C) Remove computing load for presentation services from the system managing a shared database resource. D) All

Last Answer : D) All

Identify the criteria for designing database from the point of view of user A) No redundancy B) No inapplicable attributes C) Uniformity in naming & definitions of the data items D) All of the above

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Last Answer : D) All of the above

The DBMS utility, ...................... allows to reconstruct the correct state of database from the backup and history of transactions. A) Backup B) Recovery C) Monitoring D) Data loading

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Last Answer : B) Recovery

A ……………… allows to make copies of the database periodically to help in the cases of crashes & disasters. A) Recovery utility B) Backup Utility C) Monitoring utility

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Last Answer : B) Backup Utility

Anything that affects the database schema is a part of A) DML B) DCL C) DDL D) All of the above

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Last Answer : D) All of the above

Which of the following is not a logical database structure? A) Chain B) Network C) Tree D) Relational

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Last Answer : A) Chain

………. contains data assisting day to day activities of the organization. A) Control database B) Operational database C) Strategic database D) Sequential database

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A logical schema A) is the entire database B) is a standard way of organizing information into accessible parts. C) Describes how data is actually stored on disk. D) All of the above

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Last Answer : B) is a standard way of organizing information into accessible parts.

…………… table store information about database or about the system. A) SQL B) Nested C) System D) None of these

Description : …………… table store information about database or about the system. A) SQL B) Nested C) System D) None of these

Last Answer : C) System

A top-to-bottom relationship among the items in a database is established by a A) Hierarchical schema B) Network schema C) Relational Schema D) All of the above

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Last Answer : A) Hierarchical schema

In an ER model, ……………. is described in the database by storing its data. A) Entity B) Attribute C) Relationship D) Notation

Description : In an ER model, ……………. is described in the database by storing its data. A) Entity B) Attribute C) Relationship D) Notation

Last Answer : A) Entity

Which of the following are the network services? A) File service B) Print service C) Database service D) All of the above

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Last Answer : D) All of the above

A relational database developer refers to a record as (A) a criteria. (B) a relation. (C) a tuple. (D) an attribute.

Description : A relational database developer refers to a record as (A) a criteria. (B) a relation. (C) a tuple. (D) an attribute.

Last Answer : C) a tuple

The database schema is written in (A) HLL (B) DML (C) DDL (D) DCL

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Last Answer : (C) DDL

Architecture of the database can be viewed as (A) two levels. (B) four levels. (C) three levels. (D) one level.

Description : Architecture of the database can be viewed as (A) two levels. (B) four levels. (C) three levels. (D) one level.

Last Answer : (C) three levels

DML is provided for (A) Description of logical structure of database. (B) Addition of new structures in the database system. (C) Manipulation & processing of database. (D) Definition of physical structure of database system.

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Last Answer : C) Manipulation & processing of database.

The view of total database content is (A) Conceptual view. (B) Internal view. (C) External view. (D) Physical View.

Description : The view of total database content is (A) Conceptual view. (B) Internal view. (C) External view. (D) Physical View.

Last Answer : (A) Conceptual view.

Repository of information gathered from multiple sources, storing under unified scheme at a single site is called as (A) Data mining (B) Meta data (C) Data warehousing (D) Database

Description : Repository of information gathered from multiple sources, storing under unified scheme at a single site is called as (A) Data mining (B) Meta data (C) Data warehousing (D) Database

Last Answer : (C) Data warehousing

A Network Schema (A) restricts to one to many relationship (B) permits many to many relationship (C) stores Data in a Database (D) stores Data in a Relation

Description : A Network Schema (A) restricts to one to many relationship (B) permits many to many relationship (C) stores Data in a Database (D) stores Data in a Relation

Last Answer : (B) permits many to many relationship

Which of the following is not a type of Database Management System? (A) Hierarchical (B) Network (C) Relational (D) Sequential

Description : Which of the following is not a type of Database Management System? (A) Hierarchical (B) Network (C) Relational (D) Sequential 

Last Answer : (D) Sequential

GO BOTTOM and SKIP-3 commands are given one after another in a database file of 30 records. It shifts the control to (A) 28th record (B) 27th record (C) 3rd record (D) 4th record

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Last Answer : (B) 27th record

Database applications were built directly on top of file system to overcome the following drawbacks of using file-systems (a) Data redundancy and inconsistency (b) Difficulty in accessing Data (c) Data isolation (d) Integrity problems (A) (a) (B) (a) and (d) (C) (a), (b) and (c) (D) (a), (b), (c) and (d)

Description : Database applications were built directly on top of file system to overcome the following drawbacks of using file-systems (a) Data redundancy and inconsistency (b) Difficulty in accessing Data (c) Data isolation (d) Integrity problems (A) (a) (B) ... d) (C) (a), (b) and (c) (D) (a), (b), (c) and (d)

Last Answer : (D) (a), (b), (c) and (d)