In Data mining, classification rules are extracted from .............. (A) Data (B) Information (C) Decision Tree (D) Database

In Data mining, classification rules are extracted from .............. (A) Data (B) Information (C) Decision Tree (D) Database
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(C) Decision Tree 
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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

................. is subject oriented, integrated, time variant, non-volatile collection of data in support of management decisions. (A) Data mining (B) Web mining (C) Data warehouse (D) Database Management System

Description : ................. is subject oriented, integrated, time variant, non-volatile collection of data in support of management decisions. (A) Data mining (B) Web mining (C) Data warehouse (D) Database Management System

Last Answer : (C) Data warehouse

Given the following statements: (a) Strategic value of data mining is time stamping (b) Information collection is an expensive process in building an expert system. Which of the following options is correct ? (A) Both (a) and (b) are false (B) Both (a) and (b) are true (C) (a) is true, (b) is false (D) (a) is false, (b) is true

Description : Given the following statements: (a) Strategic value of data mining is time stamping (b) Information collection is an expensive process in building an expert system. Which of the following options is correct ? (A) Both (a) and (b) ... true (C) (a) is true, (b) is false (D) (a) is false, (b) is true

Last Answer :  (B) Both (a) and (b) are true

Consider the two class classification task that consists of the following points: Class C1: [1 1.5] [1 -1.5] Class C2: [-2 2.5] [-2 -2.5] The decision boundary between the two classes using single perceptron is given by: (A) x1+x2+1.5=0 (B) x1+x2-1.5=0 (C) x1+1.5=0 (D) x1-1.5=0

Description : Consider the two class classification task that consists of the following points: Class C1: [1 1.5] [1 -1.5] Class C2: [-2 2.5] [-2 -2.5] The decision boundary between the two classes using single perceptron is given by: (A) x1+x2+1.5=0 (B) x1+x2-1.5=0 (C) x1+1.5=0 (D) x1-1.5=0

Last Answer : (C) x1+1.5=0 

The task of correcting and pre processing data is called as (A) Data streaming (B) Data cleaning (C) Data mining (D) Data storming

Description : The task of correcting and pre processing data is called as (A) Data streaming (B) Data cleaning (C) Data mining (D) Data storming

Last Answer : (B) Data cleaning

............... model is designed to bring prices down by increasing the number of customers who buy a particular product at once. (A) Economic Order Quantity (B) Inventory (C) Data Mining (D) Demand-Sensitive Pricing

Description : ............... model is designed to bring prices down by increasing the number of customers who buy a particular product at once. (A) Economic Order Quantity (B) Inventory (C) Data Mining (D) Demand-Sensitive Pricing

Last Answer : (D) Demand-Sensitive Pricing

Consider the following two statements: (a) Business intelligence and Data warehousing is used for forecasting and Data mining. (b) Business intelligence and Data warehousing is used for analysis of large volumes of sales data. Which one of the following options is correct? (A) (a) is true, (b) is false (B) Both (a) and (b) are true (C) (a) is false, (b) is true (D) Both (a) and (b) are false

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Last Answer : (B) Both (a) and (b) are true

In Data mining, .............. is a method of incremental conceptual clustering. (A) STRING (B) COBWEB (C) CORBA (D) OLAD

Description : In Data mining, .............. is a method of incremental conceptual clustering. (A) STRING (B) COBWEB (C) CORBA (D) OLAD

Last Answer : (B) COBWEB

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

Description : 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

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

……………… is a tabular method for describing the logic of the decisions to be taken. A) Decision tables B) Decision tree C) Decision Method D) Decision Data

Description : ……………… is a tabular method for describing the logic of the decisions to be taken. A) Decision tables B) Decision tree C) Decision Method D) Decision Data

Last Answer : A) Decision tables

n(log n) is referred to A. A measure of the desired maximal complexity of data mining algorithms B. A database containing volatile data used for the daily operation of an organization C. Relational database management system D. None of these

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Last Answer : A. A measure of the desired maximal complexity of data mining algorithms

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

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

Last Answer : A) Chain

…………… 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

Distance vector routing algorithm is a dynamic routing algorithm. The routing tables in distance vector routing algorithm are updated ........... (1) automatically (2) by server (3) by exchanging information with neighbour nodes. (4) with back up database

Description : Distance vector routing algorithm is a dynamic routing algorithm. The routing tables in distance vector routing algorithm are updated ........... (1) automatically (2) by server (3) by exchanging information with neighbour nodes. (4) with back up database

Last Answer : Answer: 3

Any decision tree that sorts n elements has height .............. (1) Ω(log n) (2) Ω(n) (3) Ω(n log n) (4) Ω(n2)

Description : Any decision tree that sorts n elements has height .............. (1) Ω(log n) (2) Ω(n) (3) Ω(n log n) (4) Ω(n2)

Last Answer : (3) Ω(n log n) 

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

Description : 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

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

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

Description : 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

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

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.

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

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

Last Answer : B) Operational database

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

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

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) 

Consider the following database table : Create table test( one integer, two integer, primary key(one), unique(two), check(one≥1 and ≤10), check(two≥1 and ≤5) ); How many data records/tuples atmost can this table contain ? (A) 5 (B) 10 (C) 15 (D) 50

Description : Consider the following database table : Create table test( one integer, two integer, primary key(one), unique(two), check(one≥1 and ≤10), check(two≥1 and ≤5) ); How many data records/tuples atmost can this table contain ?  (A) 5 (B) 10 (C) 15 (D) 50

Last Answer : (A) 5 

Data which improves the performance and accessibility of the database are called: (A) Indexes (B) User Data (C) Application Metadata (D) Data Dictionary

Description : Data which improves the performance and accessibility of the database are called: (A) Indexes (B) User Data (C) Application Metadata (D) Data Dictionary

Last Answer : (A) Indexes

In distributed databases, location transparency allows for database users, programmers and administrators to treat the data as if it is at one location. A SQL query with location transparency needs to specify: (A) Inheritances (B) Fragments (C) Locations (D) Local formats

Description : In distributed databases, location transparency allows for database users, programmers and administrators to treat the data as if it is at one location. A SQL query with location transparency needs to specify: (A) Inheritances (B) Fragments (C) Locations (D) Local formats 

Last Answer : (B) Fragments

Which of the following statements concerning Object-Oriented databases is FALSE? (A) Objects in an object-oriented database contain not only data but also methods for processing the data. (B) Object-oriented databases store computational instructions in the same place as the data. (C) Object-oriented databases are more adapt at handling structures (analytical) data than relational databases. (D) Object-oriented databases store more types of data than relational databases and access that data faster.

Description : Which of the following statements concerning Object-Oriented databases is FALSE? (A) Objects in an object-oriented database contain not only data but also methods for processing the data. (B ... Object-oriented databases store more types of data than relational databases and access that data faster.

Last Answer : (C) Object-oriented databases are more adapt at handling structures (analytical) data than relational databases.

In a relational database model, NULL values can be used for all but which one of the following? (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL. (B) To avoid confusion with actual legitimate data values like 0 (zero) for integer columns and ‘’ (the empty string) for string columns. (C) To leave columns in a tuple marked as “unknown” when the actual value is unknown. (D) To fill a column in a tuple when that column does not really “exist” for that particular tuple.

Description : In a relational database model, NULL values can be used for all but which one of the following? (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL. (B) To ... D) To fill a column in a tuple when that column does not really exist for that particular tuple.

Last Answer : (A) To allow duplicate tuples in the table by filling the primary key column(s) with NULL.

Relational database schema normalization is NOT for: (A) reducing the number of joins required to satisfy a query. (B) eliminating uncontrolled redundancy of data stored in the database. (C) eliminating number of anomalies that could otherwise occur with inserts and deletes. (D) ensuring that functional dependencies are enforced.

Description : Relational database schema normalization is NOT for: (A) reducing the number of joins required to satisfy a query. (B) eliminating uncontrolled redundancy of data stored in the database. (C) ... could otherwise occur with inserts and deletes. (D) ensuring that functional dependencies are enforced. 

Last Answer : reducing the number of joins required to satisfy a query.

DBMS provides the facility of accessing data from a database through (A) DDL (B) DML (C) DBA (D) Schema

Description : DBMS provides the facility of accessing data from a database through (A) DDL (B) DML (C) DBA (D) Schema 

Last Answer : (B) DML

An ER Model includes I. An ER diagram portraying entity types. II. Attributes for each entity type III. Relationships among entity types. IV. Semantic integrity constraints that reflects the business rules about data not captured in the ER diagram. (A) I, II, III & IV (B) I&IV (C) I, II & IV (D) I & III

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Last Answer : (A) I, II, III & IV

Blind image deconvolution is ................ (A) Combination of blur identification and image restoration (B) Combination of segmentation and classification (C) Combination of blur and non-blur image (D) None of the above

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Last Answer : (A) Combination of blur identification and image restoration 

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

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

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

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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

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

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

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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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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

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Last Answer : D) All

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

Description : 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

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

………………… 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

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Last Answer : C) Multiple databases

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

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

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

Last Answer : D) All of the above