sql更改完整模式报错_SQL的完整形式是什么？

sql更改完整模式报错

SQL：结构化查询语言 (SQL: Structured Query Language)

SQL is an abbreviation of Structured Query Language. It is a programming language developed and designed for handling structured data in Relational Database Management System.

SQL是结构化查询语言的缩写 。它是一种为在关系数据库管理系统中处理结构化数据而开发和设计的编程语言。

In the beginning, it was called a SEQUEL which is abbreviated by the full form Structured English Query Language developed for addition, updation or removal of data from inside the database. Afterward, it changed its name and called a Structured Query Language (SQL).

最初，它被称为SEQUEL ，它是为从数据库内部添加，更新或删除数据而开发的完整格式的结构化英语查询语言的缩写。之后，它更改了名称并称为结构化查询语言(SQL) 。

历史 (History)

SQL from the beginning originated based on Relational Algebra and Tuple Relational Calculus. In the initial 1970s, SQL was designed and created by Donald D. Chamberlin and Raymond F. Boyce at IBM. It was created for operating and recovering data stored in the actual quasi-relational database management system of IBM. Although in June 1979, the first commercial execution of SQL was launched by Relational Software for VAX computers. The standard "Database Language SQL" language definition was officially approved by standard groups ANSI and ISO in 1986.

SQL从一开始就起源于关系代数和元组关系演算。在1970年代初期， SQL是由IBM的Donald D. Chamberlin和Raymond F. Boyce设计和创建的。它是为操作和恢复存储在IBM实际的准关系数据库管理系统中的数据而创建的。尽管在1979年6月，Relational Software为VAX计算机启动了SQL的第一个商业执行。 1986年，标准组ANSI和ISO正式批准了标准的“数据库语言SQL”语言定义。

SQL的应用 (Applications of SQL)

In writing Data Integration Scripts.
编写数据集成脚本。
In operating analytical queries.
在操作分析查询。
In retrieving information.
在检索信息。
In the modification of mark designs and database table.
在修改标记设计和数据库表中。

优点 (Advantages)

There are various advantages of Structured Query Language which are given in the following points,

结构化查询语言具有以下优点，这些优点如下：

There is no requirement to write a considerable amount of code by using the standard SQL, and that makes it very easy to handle the database systems.
不需要使用标准SQL编写大量代码，这使得处理数据库系统非常容易。
Standards that are well stated and long-established are used by the SQL databases that are actually used by ISO and ANSI. NoSQL databases do not attach to any standards.
ISO和ANSI实际使用SQL数据库使用已明确陈述和长期建立的标准。 NoSQL数据库不附加任何标准。
SQL can be used in the program in computer systems, servers, laptops, and even in a few smartphones.
SQL可以在计算机系统，服务器，便携式计算机甚至某些智能手机中的程序中使用。
SQL is an interactive domain language that can be used for sharing or exchanging information with the databases and in seconds be to give answers to the complicated questions.
SQL是一种交互式领域语言，可用于与数据库共享或交换信息，并且可以在几秒钟内给出复杂问题的答案。
SQL language can help the users to make multiple views of database structure and databases for distinct users.
SQL语言可以帮助用户为不同的用户制作数据库结构和数据库的多个视图。

缺点 (Disadvantages)

There are some disadvantages also of Structured Query Language which are given in the following points,

结构化查询语言也有一些缺点，这些缺点在以下几点中给出：

SQL has a complicated interface that makes it complex to access for some users.
SQL具有复杂的接口，这使得某些用户的访问变得复杂。
In SQL, because of the hidden business rules, the programmers who use SQL don't have complete command over the database.
在SQL中，由于隐藏的业务规则，使用SQL的程序员没有对数据库的完整命令。
To ensure vendor lock-in, some of the databases move from proprietary extensions to standard SQL.
为了确保供应商锁定，某些数据库从专有扩展迁移到标准SQL。
The operating value price of some SQL versions is so costly that it makes it strenuous for some programmers to access it.
某些SQL版本的操作价值非常昂贵，以至于某些程序员难以访问它。