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Database

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Database Database Presentation Transcript

  • Introduction about data Database, DBMS, Structured Query Language
  • What is Database   A collection of information organized in such a way that a computer program can quickly select desired pieces of data. Traditional databases are organized by fields, records, and files.
  • What are database for?  These are created to operate large quantities of information by inputting, storing, retrieving, and managing that information
  • How to use Database?  Database Management System (DBMS)  are specially designed applications that interact with the user, other applications, and the database itself to capture and analyze data.  is a software system designed to allow the definition, creation, querying, update, and administration of databases.  is responsible for maintaining the integrity and security of stored data, and for recovering information if the system fails. Well-known DBMSs include MySQL, MariaDB, PostgreSQL, SQLite, Microsoft SQL Server, Oracle, SAP, dBASE, FoxPro, IBM DB2, LibreOffice Base and FileMaker Pro.
  • The interactions catered for by most existing DBMS fall into four main groups: Data definition - Defining new data structures for a database, removing data structures from the database, modifying the structure of existing data. Update - Inserting, modifying, and deleting data. Retrieval - Obtaining information either for end-user queries and reports or for processing by applications. Administration - Registering and monitoring users, enforcing data security, monitoring performance, maintaining data integrity, dealing with concurrency control, and recovering information if the system fails.
  • What is SQL and its uses     Acronym for Standard/Structured Query Language lets you access and manipulate databases SQL is an ANSI (American National Standards Institute) standard Lets you set commands to access specific or numbers of data for retrieval, even delete and update
  • What SQL can do?           SQL can execute queries against a database SQL can retrieve data from a database SQL can insert records in a database SQL can update records in a database SQL can delete records from a database SQL can create new databases SQL can create new tables in a database SQL can create stored procedures in a database SQL can create views in a database SQL can set permissions on tables, procedures, and views