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38138396
SQL language
Descrição
Description of a SQL programming
Sem etiquetas
tecnologia
sql
programming
dbase
tecnología
technology
Mapa Mental por
Gildardo Cortes Gallo
, atualizado more than 1 year ago
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Criado por
Gildardo Cortes Gallo
aproximadamente 2 anos atrás
15
0
0
Resumo de Recurso
SQL language
What is ?
SQL stands for Structured Query Language
is a management language for handling information in relational databases.
allows to communicate with the database and perform operations to access and manipulate the stored information
Is a type of programming Languaje
Used in
retail
health
banking
education
telecommunications
Even defense
History
In 1970s
by IBM researchers Raymond Boyce and Donald Chamberlin
Standardized in 1986
Functions
control all the functions that a database management system provides to its users
providing a framework for creating the database itself
managing its security
updating its contents
retrieving data
sharing it among different users
interact with the database
features
use of algebra and relational calculus to perform queries
manage and retrieve information from relational database management systems
implementations in different systems with the same code
Data integrity
valid, correct and complete
protects the dBase from corruptions caused by system failures or inconsistent updates.
Flexibility
allows to define different ways of viewing data to meet specific user demands.
Simplicity and clarity
unified, clear and easy to understand language
statements are easy to understand and learn
Who does it use?
companies that have databases
data analysts
data scientists
data engineers
back-end or mobile application developers
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