File Name: advanced database questions and answers .zip
These questions are very useful for the preparation of competitive exams. What is a repository of data, intended to assist proficient storage of data, retrieval and preservation called?
What is Failover clustering overview? Answer: Failover clustering is mainly used for data availability. Typically, in a failover cluster, there are two machines.
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. Explanation: The Query given in option D does not contain the "from" clause, which specifies the relation from which the values have to be selected or fetched.
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. Explanation: The Query given in option D does not contain the "from" clause, which specifies the relation from which the values have to be selected or fetched. Therefore the correct answer is D. It represents the single and multiple characters.
To understand it more clearly, consider the following syntax:. Explanation: We can understand the "one to many" relationship as a teacher who may have more than one class to attend. Explanation: To sort the salary from highest to lowest amount and display the employee's name alphabetically, one can use the "Desc and Asc" in the above-given Query.
It also allows modifying the data stored in the database as well. Explanation: The term "FAT" can be described as a file structure or file architecture. In which all the information about the files where they are stored and where all these files need to be stored or in which directory, all that information generally stored in the file structure.
Therefore the Operating system creates a table in which all the files and clusters are stored, known as the file allocation table. All files with a size greater than the maximum size or is 4Gb are not supported by the FAT. Explanation: In the old operating systems, the file structure used to store and manage files is called the FAT 32 or File Allocation Table.
Later, when the technology evolves with time, a new type of file system is introduced, known as the New Technology File System. It overcomes all the drawbacks, issues that exist in FAT file architecture and has many other new features such as it is fast, it can handle files whose size is even greater than 4 GB. You may be surprised to know that windows are still using it because of its fast speed and can support files whose size is up to 16TB 16 terabytes , which is much more than that file size supported by the old system.
Therefore the correct answer is Data Warehouse. Explanation: The tools used to obtain meaningful information or Data from the large collection of data or from the Data Warehouses are known as the Data mining tools.
Through data mining, one can easily filter the useful information or data from the massive collection of the data. Therefore the correct answer is Data Mining.
Explanation: The data redundancy generally occurs whenever more than one copy of the exact same data exists in several different places.
Sometimes it may cause data inconsistency, which can result in an unreliable source of data or information that is not good for anyone. Explanation: The Mata Data refers to the type of data that describes the other data or information. For a common music file, the metadata may include the singer's name, the year it was released, and the lyrics, etc. Explanation: Data abstraction means displaying or sharing only the data that is needed and hiding from all other data until it is necessary to share it.
However, the data abstraction level that describes how the data was actually stored in the user's machine or system is known as the Physical level. Therefore the correct answer is B. Explanation: The term "DBA" refers to the Database Administrator that manages the whole database and updates the database on a regular basis. Explanation: Whenever we have some related data, information or records, we collect all those related data or records , put them together, store them in one place, and give that collection a name that is known as a file.
Explanation: In general, the term "data" refers to the row facts and figure, whereas the information referred to as the data, which is really important for someone or a particular person.
Therefore the correct answer is C. Explanation: In SQL, the relation is represented by a table, and a table is a collection of rows and columns. So in a relation or we can say table , rows are called the tuples.
So, the correct answer will be tuples. Explanation: Cardinality refers to the number of tuples of relation because cardinality represents the number of tuples in a relation. Suppose we have a relation or table that contains 30 tuples or Rows and four columns, so the cardinality of our relation will be Explanation: In data manipulation language, the command like select, insert, update, and delete is used to manipulate the information or data, records , for example create a table, update table delete table, etc.
Explanation: The Data definition language is generally used to maintain or define the structure of the database. For example, creating a table, drop table, alter table. In short, we can say that the command of data definition languages is used to work on the table's schemas inside the database. Explanation: In specialization, the top-down approach is used, and it is apposite to the generalization. In the specialization, the higher-level entity can be divided into sub lower entities. It is generally used for identifying the subset of an entity set which share the distinguishing characteristics.
Suppose you have an entity, e. So through the specialization, you can be divided further into sub-entities like two-wheelers and four-wheelers. The bottom-up approach is used in the generalization. The several lower-level sub-entities are grouped together to make an individual higher-level entity.
In short, we can say that it is totally the opposite of specialization. To understand it more clearly, consider the following example:. Suppose you have several lower entities like bus, car, motorbike etc. So, in order to make a more generalize or higher level entity, you can combine them under a new higher-level entity such as a vehicle. Explanation: In a database, the number of rows inside a table is known as tuples, and if we further divide those tuples or rows into those fields, they become the domains.
So the correct answer will be B. The commands like commit, save point, rollback come under the TCL used to control the transactions. Therefore the correct answer will be D. Explanation: In the database, the number of rows inside a table is called the tuples, and the numbers of columns are known as the attributes. Explanation: The column inside the table is called the attribute, and the total number of attributes inside the table is called the degree.
So, here as we can see, degree refers to the number of attributes in a relation. Explanation: To fetch data from the database management system, generally, the "select" statement is used.
Therefore, the Data Manipulation Language is used in the application programs while requesting the data from the database management system. Explanation: To delete an existing row in a table the generally, the "delete" command is used. The "delete" command is one of the commands that belong to the Data manipulation language. Explanation: The Transaction Control Language is used while working with the transactions.
To save any transaction permanently into the database generally, the "commit" command is used, by which any changes get reflected permanently into the database, and they become irreversible.
Explanation: To removing or deleting a relation, the "drop" command is used instead of delete because here we are working on the objects of the database. So, to maintain the objects of a database, the Data definition language is used. Therefore the "drop" command is used to delete a relation form a database instead of using the "delete" command. Explanation: As we all know that while working with the Transactions, the Transaction Control Language is used.
To restore the database to the last committed state or to undo the latest changes , the "rollback" command is used that belongs to the Transaction Control Language. Explanation: The Database management system can also considered as the set of programs that enables users to create and maintain the database. Explanation: The term"DFD" stands for the Data Flow Diagram, and to represent the flow of the data or information , the data flow diagram is used.
The data flow diagram also helps in understanding how the data is managed in the application. Explanation: The collection of data or information stored in a database at a particular moment is known as the instance of the database. Explanation: The term "SQL" stands for the structured query language, which is one of the most widely, used programming languages for relational databases. It can also be used for managing and organizing data in all sorts of systems in which different data relationships exist.
Explanation: The term "Data independence" refers that the program should not be dependent on either the logical attributes of data or physical attributes of data. Explanation: In database management systems, relation calculus is a type of non-procedural query language that describes what data needs to be retrieved.
However, it does not explain how to retrieve the data. Explanation: The conceptual view refers to the total view of the content available in the database. Therefore the correct answer is A. Explanation: The term "DML" refers to the data manipulation language, which is commonly used to perform basic operations such as insert data, delete, and update data in a database. Explanation: A database's architecture can be viewed as the three levels of abstraction that are named as the internal level, external level, and the conceptual level.
Explanation: In the relation model, the relations are also referred to as the tables because the relations are considered as the technical name of the table. So the correct answer is D. Explanation: The database management query language is generally designed by keeping in mind that it must support the end-users who are familiar with the English-like commands.
It should also boost the process of development of the complex applications software and helps in specifying the structure of the database. Explanation: To represent the relationships between the various tables in the database, generally, the foreign key is used. Therefore the correct answer is the foreign key.
Explanation: The database's external level is the one and only level that is considered the closest level to the end-users. So the correct answer will be the B. Explanation: A computer security protocol for logging-in can be considered as the procedure component of an information system. Explanation: In order to define the overall design of the database, generally, the schema is used. Explanation: To make manipulations in a column of a specific table, the "alter" command is used.
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Details Last Updated: 07 January What are the different components of DBMS? Some questions are easier, others harder; if a question sounds hard, skip it and return later. Database is collection of data and Managing database includes storing, querying, updation, and administration of databases. You have 90 minutes to work on the exam. This section on Database Management System contains questions from previous exams based on the concepts of the database.
DBMS is a collection of computer programs that helps us to create and manage database. Database is collection of data and Managing database includes storing, querying, updation, and administration of databases. End users interacts with a Databases with the help of a computer software application called front-end application, like forms, touch screens, etc. However, most of the web application uses MySql as backend database. Here you will find a list of common important questions on database management system in MCQ quiz style with answer for competitive exams and interviews. These frequently asked sample questions on DBMS are given with correct choice of answer that you can check instantly.
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Collection of interrelated data B. Collection of programs to access data C. Collection of data describing one particular enterprise D.
A prearranged collection of figures known as data is called database. Database Management Systems DBMS are applications designed especially which enable user interaction with other applications. Edgar F. Codd proposed the relational model in
A prearranged collection of figures known as data is called database.
If you like to learn Database Management System thoroughly, you should attempt to work on the complete set of Database Management System questions and answers mentioned above. We have arranged all the multiple choice questions regarding Relational Database Management System in the below mock test. Database Management System This quiz consist of database management DBMS quiz questions in the form of multiple choice out of which only one option is correct. Ans: B Q.
Skip to content. All Homes Search Contact. Each objective question has 4 possible answers. Answer: b Explanation: Database is user-centered. The following sections contains various questions on dealing with the concept of Relational Model. Final Exam: Introduction to Database Systems This exam has seven sections, each with one or more problems.
Сказал он. После множества поворотов и коротких рывков Беккер оказался на перекрестке трех улочек с табличкой Эскуина-де-лос-Рейес и понял, что уже был здесь минуту-другую. Притормозив, он задумался, в какую сторону повернуть, и в этот момент мотор его веспы кашлянул и заглох. Стрелка топливного индикатора указывала на ноль. И, как бы повинуясь неведомому сигналу, между стенами слева от него мелькнула тень.
Answer ALL questions. 2. Questions may be answered in any order but your answers must show the question number clearly. 3. Always start a.
Ну конечно, - сказала она, все еще не в силах поверить в произошедшее. - Он хотел, чтобы вы восстановили его доброе имя. - Нет, - хмуро сказал Стратмор. - Танкадо потребовал ТРАНСТЕКСТ. - ТРАНСТЕКСТ.
Мне больно! - задыхаясь, крикнула Сьюзан. Она судорожно ловила ртом воздух, извиваясь в руках Хейла. Он хотел было отпустить ее и броситься к лифту Стратмора, но это было бы чистым безумием: все равно он не знает кода. Кроме того, оказавшись на улице без заложницы, он обречен. Даже его безукоризненный лотос беспомощен перед эскадрильей вертолетов Агентства национальной безопасности. Сьюзан - это единственное, что не позволит Стратмору меня уничтожить. - Сьюзан, - сказал он, волоча ее к лестнице, - уходи со .
ORG FROM: ETDOSHISHA. EDU МЕНЯЮЩИЙСЯ ОТКРЫТЫЙ ТЕКСТ ДЕЙСТВУЕТ. ВСЯ ХИТРОСТЬ В МЕНЯЮЩЕЙСЯ ПОСЛЕДОВАТЕЛЬНОСТИ. В это трудно было поверить, но она видела эти строки своими глазами. Электронная почта от Энсея Танкадо, адресованная Грегу Хейлу.
В два часа ночи по воскресеньям. Она сейчас наверняка уже над Атлантикой. Беккер взглянул на часы.
Database Management System – Short Question And Answer PDF. A+; A; A-. Database Advanced Database Management System MCQs · Database.