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These include well known ones like: file - File URI scheme. ftp – File Transfer Protocol. http – Hypertext Transfer Protocol. https – Hypertext Transfer Protocol Secure. imap – Internet Message Access Protocol. irc – Internet Relay Chat. nntp – Network News Transfer Protocol. as well as many lesser known schemes like:
SQL/Schemata. The SQL/Schemata, or Information and Definition Schemas, part of the SQL standard is defined by ISO/IEC 9075-11:2008. SQL/Schemata defines the information schema and definition schema, providing a common set of tools to make SQL databases and objects self-describing. These tools include the SQL object identifier [clarify ...
The formal definition of a database schema is a set of formulas (sentences) called integrity constraints imposed on a database. [citation needed] These integrity constraints ensure compatibility between parts of the schema. All constraints are expressible in the same language. A database can be considered a structure in realization of the ...
Conversely, PostgreSQL has applied more of the specification implementing cross-table, cross-schema, and then left room for future cross-database functionality. MySQL aliases schema with database behind the scenes, such that CREATE SCHEMA and CREATE DATABASE are analogs. It can therefore be said that MySQL has implemented cross-database ...
MySQL (/ ˌmaɪˌɛsˌkjuːˈɛl /) [ 5 ] is an open-source relational database management system (RDBMS). [ 5 ][ 6 ] Its name is a combination of "My", the name of co-founder Michael Widenius 's daughter My, [ 7 ] and "SQL", the initialism for Structured Query Language.
MySQL Workbench is a visual database design tool that integrates SQL development, administration, database design, creation and maintenance into a single integrated development environment for the MySQL database system. It is the successor to DBDesigner 4 from fabFORCE.net, and replaces the previous package of software, MySQL GUI Tools Bundle.
Database model. A database model is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored, organized and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.
Database normalization is the process of structuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancy and improve data integrity. It was first proposed by British computer scientist Edgar F. Codd as part of his relational model. Normalization entails organizing the columns ...