DML(data manipulation language):自动提交的数据库操作语言 它们是SELECT、UPDATE、INSERT、DELETE,就象它的名字一样 DDL(data definition language):自动提交的数据库定义语言 主要的命令有CREATE、ALTER、DROP等,DDL主要是用在定义或改变表(TABLE)的结构,数据类型,表之间的链接和约束等初始化工作上,他们大多在建立表...
一:创建数据库 创建一个数据文件和一个日志文件(MySchool) create database MySchool on primary --默认属于primary主文件组,可省略 ( --数据文件的具体描述 name = 'MySchool_data' --主数据库文件的逻辑名称 filename = 'D:\project\MySchool_data.mdf', --主数据库文件的物理名称 size = 5MB, --主...
-- 如果数据库不存在就创建数据库 CREATE DATABASE IF NOT EXISTS School; 1. 2. 删除数据库: -- 如果数据库存在就删除数据库 DROP DATABASE IF EXISTS School; 1. 2. 显示数据库: SHOW DATABASES; 1. 使用数据库: USE school; 1. 1.2 数据表操作: 重要:用(`)反引号为标识符(库名、表名、字段名...
MyEdu's school management system software is smart education tool which manages all school processes in an efficient & cost-effective way.
You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU AGPL, see <http://www.gnu.org/licenses/>. Starred 3.7K Star ...
Discover the joy of learning with MySchool! Empower your child to become the teacher of their own classroom while having a blast. MySchool is an educational app…
album of the device. AirMicro and iPad / iPhone / iPod touch are connected via Wi-Fi and easy to use in many ways, such as industry, beauty, medical, education, science, identification, archeology, and agriculture. Also it is convenient to use no matter you are at home, at school, ...
My Study Life supports rotation class schedules as well as traditional weekly student calendars. MSL allows you to enter your school subjects, organize your classes, and enter information about your lessons—all so you can effortlessly keep track of your class calendar. ...
I have a job where I work all day. And I also take online classes. It was impossible to get everything done. But "do my classes for me" made it possible! Their helpers understand how hard online school can be. Now I can work, and they make sure my schoolwork is perfect. ...