what are the different components of database?
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['Hardware.', 'Software.', 'Data.', 'Procedures.', 'Database Access Language.']
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['Looking at and Analyzing Data. ... ', 'Navigating Database Software. ... ', 'Data Integrity. ... ', 'Managing Accounts and Files. ... ', 'Database Design and Planning.']
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Characteristics of Database Management System DBMS allows entities and relations among them to form tables. It follows the ACID concept ( Atomicity, Consistency, Isolation, and Durability). DBMS supports multi-user environment that allows users to access and manipulate data in parallel.
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A database schema is the skeletal structure that represent the logical view of all the entire datasets defining how the data are organized and how the relations among them are associated. While Database state refers to the content of a database at any point in time.
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['Numbers.', 'Strings.', 'Lists.', 'Dictionaries.', 'Tuples.', 'Files.', 'Other types include: Sets, types, None, Booleans.']
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['Numeric data types such as int, tinyint, bigint, float, real etc.', 'Date and Time data types such as Date, Time, Datetime etc.', 'Character and String data types such as char, varchar, text etc.']
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['Provides security and removes redundancy.', 'Self-describing nature of a database system.', 'Insulation between programs and data abstraction.', 'Support of multiple views of the data.', 'Sharing of data and multiuser transaction processing.']
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['Data Definition Language (DDL) Statements.', 'Data Manipulation Language (DML) Statements.', 'Transaction Control Statements.', 'Session Control Statements.', 'System Control Statement.', 'Embedded SQL Statements.']
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The ten functions in the DBMS are: data dictionary management, data storage management, data transformation and presentation, security management, multiuser access control, backup and recovery management, data integrity management, database access languages and application programming interfaces, database communication ...
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['What is DBMS?', 'What is RDBMS?', 'Example: SQL Server.', 'What is SQL?', 'What is a Database?', 'What are tables and Fields?', 'What is a primary key?', 'What is a unique key?']
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['SELECT - extracts data from a database.', 'UPDATE - updates data in a database.', 'DELETE - deletes data from a database.', 'INSERT INTO - inserts new data into a database.', 'CREATE DATABASE - creates a new database.', 'ALTER DATABASE - modifies a database.', 'CREATE TABLE - creates a new table.']
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Tables are database objects that contain all the data in a database. In tables, data is logically organized in a row-and-column format similar to a spreadsheet. Each row represents a unique record, and each column represents a field in the record.
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['Unstructured Data.', 'Semi-Structured Data.', 'Structured.']
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A database table consists of rows and columns. In database terminology, each row is called a record, object or entity. Each column is called a field or attribute. Database management systems (DBMS) are used to work with large databases.
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The ultimate purpose of a database management system is to store and transform data into information to support making decisions. A DBMS consists of the following three elements: The physical database: the collection of files that contain the data.
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A relational database like Access usually has several related tables. In a well-designed database, each table stores data about a particular subject, such as employees or products. A table has records (rows) and fields (columns). Fields have different types of data, such as text, numbers, dates, and hyperlinks.
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['Database. A database is a named collection of tables. ... ', 'Command. A command is a string that you send to the server in hopes of having the server do something useful. ... ', 'Query. ... ', 'Table (relation, file, class) ... ', 'Column (field, attribute) ... ', 'Row (record, tuple) ... ', 'View. ... ', 'Client/server.']