write create table statement for department table

Management of 1.Oracle Tables Naming conventions for table and column names: Must start with a letter; Length cannot exceed 30 characters; Cannot use Oracle's reserved words; Use only the following characters: A-Z, A-Z, 0-9,

The main contents of this chapter: First, foreign key Second, table connection Third, sub-query Iv. Index First, FOREIGN key: 1. What is a foreign key 2. Foreign KEY syntax 3, FOREIGN key conditions 4.

The main contents of this chapter: First, foreign key Second, table connection Third, sub-query Iv. Index first, foreign key: 1. What is a foreign key 2. Foreign KEY syntax 3, FOREIGN key conditions 4.

Note: This article turns from:http://www.cnblogs.com/smyhvae/p/4042303.htmlThe main contents of this chapter: First, foreign key Second, table connection Third, sub-query Iv. Index First, FOREIGN key: 1. What is a

First, FOREIGN key: 1. What is a foreign key 2. Foreign KEY syntax 3, FOREIGN key conditions 4. Add foreign keys 5. Delete foreign keys 1, what is the foreign key:PRIMARY KEY : Uniquely identifies a record, cannot be

A table generally refers to a relational table, and it can also generate object tables and temporary tables. Total, the object table is generated from a user-defined data type, and temporary tables are used to store temporary data that is dedicated

database table creation, management, and data manipulation (experiment one), database creationToday we will study the creation, management and data manipulation of tables in the form of experiments."Experimental Purpose": understand the use of SQL

--Create a userCreate user Han identified by Han default tablespaceUsers temporary tablespace Temp;Grant Connect,resource,dba to Han; Grant the user Han Developer rights --------------------action on a table----------------------------Create a

Generation of database table design, generation of SQL statements, generation of database projects, generation of MySQL database First, training purposes through comprehensive training to further consolidate and deepen the basic knowledge and

How can I check the data in another table field? now I have a tb_activity table and a tb_participant table. The p_activity field in table tb_participant ipate is the same as the_num value in table tb_activity. Pass ';}?> I can output all values