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SQL language is called( ) A. structured definition language B. structured control language C. structured query language(结构化查询语言) D. structured managed language 相关知识点: 试题来源: 解析 C.structured query language(结构化查询语言)
SQL(Structured Query Language,即结构化查询语言)是一种用来操作数据库系统的编程语言,也是与数据库通信的指令,可以在数据库中对数据进行查询、插入、更新、删除等操作。 SQL可以用来做什么? 从数据库中查询需要的数据 创建新的数据库或在数据库中新建表
You use SQL to describe sets of data that can help you answer questions. When you use SQL, you must use the correct syntax. Syntax is the set of rules by which the elements of a language are correctly combined. SQL syntax is based on English syntax, and uses many of the ...
SQL is a Standard - BUT... Although SQL is an ANSI/ISO standard, there are different versions of the SQL language. However, to be compliant with the ANSI standard, they all support at least the major commands (such asSELECT,UPDATE,DELETE,INSERT,WHERE) in a similar manner. Note...
Being -- read-committed, this transaction is reading the -- committed data. This is different from snapshot -- isolation which reads from the versioned row. SELECT BusinessEntityID, VacationHours FROM HumanResources.Employee WHERE BusinessEntityID = 4; -- This statement, which caused...
Microsoft.SqlServer.Server.SqlUserDefinedTypeAttribute 會將Point UDT 的儲存格式設定為 Native。 IsByteOrdered 設定為 true,這可確保 SQL Server 中的比較結果與 Managed 程式代碼中發生的相同比較相同。 UDT 會實作 System.Data.SqlTypes.INullable 介面,讓 UDT null 感知。下列...
SQL Server Browser /BROWSERSVCSTARTUPTYPE選擇性 指定SQL Server Browser 服務的 啟動 模式。支援的值:- Automatic- Disabled- Manual SQL Server 全文檢索 /FTUPGRADEOPTION選擇性 指定全文檢索目錄升級選項。支援的值:- REBUILD- RESET- IMPORT Integration Services /ISSVCACCOUNT必要 指定Integration S...
/Action – specifies which action to perform. In this example, the action is Install. /Hideconsole – specifies that the console window is hidden or closed during the install. /Features – specifies which parent features and features to install. In this example, the parent feature SQL is inst...
Cannot create a row of size 8086 which is greater than the allowable maximum row size of 8060 cannot create an index on a view Cannot create an instance of OLE DB provider Error 7302. Cannot detach the database 'BDEV' because it is currently in use. Cannot drop a SQL Database cannot ...