Here, the SQL command retrieves all rows from the Customers table where the country is UK. Data Control Language (DCL) DCL commands include GRANT and REVOKE, which are used to control access to the database. i. GRANT In SQL, the GRANT statement gives users access privileges to the data...
“SQL is designed based on relational algebra and tuple relational calculus, SQL consists of many types of statements, which may be informally classed as sublanguages, commonly: a data query language (DQL),[a] a data definition language (DDL),[b] a data control language (DCL), and a data...
DCL（Data Control Language）语句： 即数据控制语句，用于授权/撤销数据库及其字段的权限（DCL is short name of Data Control Language which includes commands such as GRANT and mostly concerned with rights, permissions and other controls of the database system.）。常用的语句关键字有：GRANT,R...
SQL COMMANDS: DDL,DML, TCL, DCL http://www.sqlserverspecialists.com/2012/01/sql-commands-ddldml-tcl-dcl.html 资料来源 === How to answer SQL Server Common Questions interview questions? http://www.indiabix.com/technical/sql-server-common-questions/ 500 Sql server interview questions and answe...
insert backup commands like the "tar" commands here svrmgrl <<EOF2 connect internal as sysdba startup EOF2 //在Server Manager上设置为archivelog mode: connect internal as sysdba startup mount cc1; alter database archivelog; archive log start; ...
mysqladmin -u<name> -p<password> commands 1. 1.3 SQL语句入门 1.3.1.1 sql语句及其种类 DDL(Data Definition Language,数据定义语言) 用来创建或者删除存储 数据用的数据库以及数据库中的表等对象。DDL 包含以下几种指令。CREATE:创建数据库和表等对象 DROP: 删除数据库和表等对象 ALTER: 修改数据库和表...
All Oracle SQL/Services processes start by executing the following DCL commands during process creation: $ DELETE/SYMBOL/ALL $ VRFY_SAVE = F$VERIFY(1) $ DELETE :[directory]SQS__.COM; $ DEFINE SQS$DBSERVER TRUE $ DEFINE SYS$LOGIN ":[directory]" $ SET DEFAULT SYS$LOGIN $ DEFINE SYS$...
[root@centos7 ~]# mysql -p134296Welcome to the MariaDB monitor. Commands end with;or\g. Your MariaDB connectionidis28Server version:5.5.44-MariaDB MariaDB Server Copyright(c)2000,2015, Oracle, MariaDB Corporation Ab and others.
[root@server01 ~]# -- 3.使用新密码登录 [root@server01 ~]# mysql -uuser1 -p'321@abcABC' mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 13 Server version: 5.7...
SQL Server CE can still be used here. While it doesn't offer all the features of the server-based edition, SQL Server CE supports the core set of SQL commands for creating and updating a database. It is more than adequate for a standalone database. ...