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Relational Database Design And Sql Objective Questions And Answers Pdf

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database management system questions and answers pdf

Those who score great in it stands higher on the merit. A A number of tuples. B A number of attributes. C A number of tables. D A number of constraints. A Procedural language. B Non- Procedural language. C Data definition language. D High-level language. A Description of the logical structure of a database. B The addition of new structures in the database system. D Definition of a physical structure of the database system. A Selection operation. B Rename operation. C Join operation. D Projection operation.

A Object Database Connectivity. B Oral Database Connectivity. C Oracle Database Connectivity. D Open Database Connectivity. A strong entity set. B weak entity set. C simple entity set.

D primary entity set. A is the entire database. B is a standard way of organising information into accessible parts. C describes how data is actually stored on disk. D both A and C. A It is an integrated collection of logically related records. B It consolidates separate files into a common pool of data records. C Data stored in a database is independent of the application programs using it.

D All of the above. A The data definition language DDL. B The data manipulation language DML. C The database administrator DBA. D A query language.

A is no need for primary key data. B is much more data independence than some other database models. C are explicit relationships among records. D are tables with many dimensions.

A is a documentation technique. B needs data volume and processing frequencies to determine the size of the database. C involves modelling independent of the DBMS. D is designing the relational model. A the logical view. B the physical view. C the external view. D all of the above. A The data dictionary is normally maintained by the database administrator. B Data elements in the database can be modified by changing the data dictionary.

C The data dictionary contains the name and description of each data element. D A data dictionary is a tool used exclusively by the database administrator. A data is dependent on programs. B data redundancy increases. C data is integrated and can be accessed by multiple programs. D none of the above. A support end-users who use English-like commands. B support in the development of complex applications software. C specify the structure of a database.

A producing detail, summary, or exception reports. B recording a business activity. C confirming an action or triggering a response. D maintaining data. A data is defined separately and not included in programs.

B programs are not dependent on the physical attributes of data. C programs are not dependent on the logical attributes of data. D both B and C. A Data Definition Language. A a SQL query automatically eliminates duplicates. B SQL permits attribute names to be repeated in the same relation. A Stringent real-time requirements. B Multiple users wish to access the data. C Complex relationships among data. A dependent on hardware. B dependent on software. C dependent on both hardware and software.

D independent of both hardware and software. A Sophisticated end users. C Stand-alone users. D Casual end users. A the same as 0 for integer B the same as blank for character C the same as 0 for integer and blank for character D not a value.

A The name of all fields in all files. B The width of all fields in all files. C The data type of all fields in all files. A Parent-Child relationship between the tables that connect them.

B Many to many relationships between the tables that connect them. C Network model between the tables that connect them. D None of the above. Which one of the following is true? If R has m tuples and S has n tuples, then the maximum size of join is:. A A view is derived from other tables. B A view is a virtual table. C A view definition is permanently stored as part of the database. D The view never contains derived columns. A is the entire database B is a standard way of organising information into an accessible part C describe how data is actually stored on disk D None of these.

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relational algebra quiz

Here you can find Database interview questions with answers and explanation. I am designing database for a quiz, and I am stuck. Question 1. A database is a logically coherent collection of data with some inherent meaning, representing some aspect of real world and which is designed, built and populated with data for a specific purpose. The interviewers will also ask you to analyze a hypothetical problem and enumerate various possible data architecture solutions. Post Views:

Answer : e a Ans: A super key is a set of attributes of a relation schema upon which all attributes of the schema are functionally dependent. All of the above, Internal Level d. Right to Left, Record controller n C.


Read PDF Relational Database Interview. Questions Interview QuestionsPro SQL Server Database. Design. SQL Hands On DATABASE MCQ.


300+ TOP Database Management System Questions and Answers

Those who score great in it stands higher on the merit. A A number of tuples. B A number of attributes. C A number of tables.

Database quick study guide includes terminology definitions in self-teaching guide from computer science textbooks on chapters:. Multiple choice questions and answers on data modeling: entity relationship model MCQ questions PDF covers topics: Introduction to data modeling, ER diagrams, ERM types constraints, conceptual data models, entity types, sets, attributes and keys, relational database management system, relationship types, sets and roles, UML class diagrams, and weak entity types. Multiple choice questions and answers on database concepts and architecture MCQ questions PDF covers topics: Client server architecture, data independence, data models and schemas, data models categories, database management interfaces, database management languages, database management system classification, database management systems, database system environment, relational database management system, relational database schemas, schemas instances and database state, and three schema architecture. Multiple choice questions and answers on database design methodology and UML diagrams MCQ questions PDF covers topics: Conceptual database design, UML class diagrams, unified modeling language diagrams, database management interfaces, information system life cycle, and state chart diagrams.

This section of interview questions and answers focuses on "Database Management System". One shall practice these interview questions to improve their concepts for various interviews such as campus interviews, walk-in interviews, company interviews, placements, entrance exams and other competitive exams. Explanation: The term "DDL" stands for Data Definition Language, used to perform all other essential tasks such as deleting relation and related schemas in defining the structure relation.

Database Questions and Answers

Database management system multiple choice questions and answers page contain 5 questions from chapter Relational DBMS. Each objective question has 4 possible answers.

Set:- 1 MCQ on DBMS

Collection of interrelated data B. Collection of programs to access data C. Collection of data describing one particular enterprise D. All of the above. Which of the following is not a level of data abstraction? Physical Level B. Critical Level C.

 Эй! - услышал он за спиной сердитый женский голос и чуть не подпрыгнул от неожиданности. - Я… я… прошу прощения, - заикаясь, сказал Беккер и застегнул молнию на брюках. Повернувшись, он увидел вошедшую в туалет девушку. Молоденькая, изысканной внешности, ну прямо сошла со страниц журнала Севентин. Довольно консервативные брюки в клетку, белая блузка без рукавов.

 У нас, конечно, не все его тело, - добавил лейтенант.  - Solo el escroto. Беккер даже прервал свое занятие и посмотрел на лейтенанта. Solo el escroto. Он с трудом сдержал улыбку.

Еще несколько мгновений, и весь набор фильтров был восстановлен. Банк данных снова был в безопасности.

Чуть впереди, у остановки, притормозил городской автобус. Беккер поднял. Дверцы автобуса открылись, но из него никто не вышел. Дизельный двигатель взревел, набирая обороты, и в тот момент, когда автобус уже готов был тронуться, из соседнего бара выскочили трое молодых людей.

И вы хотите его упустить. - Следи за мной, - холодно парировал Стратмор. - А как же Сьюзан? - Хейл запнулся.  - Если вы позвоните, она умрет.

Разве так могут назвать католичку. Должно быть, Клушар ослышался. Беккер набрал первый из трех номеров. - Servicio Social de Sevilla, - прозвучал приятный женский голос. Беккер постарался придать своему испанскому тяжелый немецкий акцент: - Hola, hablas Aleman.

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