SQL Database Developers

SQL is a domain-specific language that was initially developed by Donald D. Chamberlin and Raymond F. Boyce in 1974 and since then there have been several changes to the language since it was introduced, the last change was done in December 2016.SQL is used in programming by SQL Developers and designed for managing data that is held in a relational Database Management 

System (RDBMS), or for stream processing in a relational Data Stream Management System (RDSMS).

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Database Management System

SQL Databases and Query were first introduced as the concept of accessing many records with a single command and also eliminated the need to specify how to reach a record. SQL was originally based on relational algebra and tuple relational calculus, it also consists of a data definition language, data manipulation and data control.Since SQL is a language SQL Developers divided into different language elements inculding "Clauses"which are constituent components of statements and queries, "Expressions" which can produce either scalar values, or tables consisting of columns and rows of data, "Queries" which retrieve the data based on specific criteria.

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SQL (Structured Query Language)

SQL Language was influenced by Datalog and has influenced many other languages. SQL Developers use some of these basic commands in SQL, "SELECT" which extracts data from a database, "UPDATE" which updates data in a database, "DELETE" which deletes data from a database, "INSERT" which inserts new data into a database, "CREATE" which creates a new database, and "ALTER" which modifies a database. SQL is also a standard of American National Standards Institute(ANSI) and International Organization for Standardization(ISO).

The following is a list of some advantages and disadvantages of SQL

Advantages of SQL

  • No coding needed: The management of the database systems is very easy, because there is no need to write substantial amounts of code.
  • Portability: SQL is cross-platform and can be used on PCs, servers, laptops and even some mobile phones, but it will require adjustments so that i can be used on the other database systems.
  • Multiple data views: With the help of SQL language, the user can change the view of the database structure and databases for other users.

Disadvantages of SQL

  • Difficult Interface: SQL has a complex interface and some users have difficulty accessing it. 
  • Partial Control: When using SQL you don't have full control over the database because of the hidden business rules.
  • Cost: The cost to operate some of the SQL versions can make it difficult for some programmers to access it.

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