how tohow to create a table with primary key and foreign keyhow to create a table with primary key and foreign key

how tohow to create a table with primary key and foreign keyhow to create a table with primary key and foreign key

how to create a table using java language with primary key and foreign key

View Answers

December 16, 2010 at 11:45 AM

Hi Friend,

A foreign key is a field (or fields) that points to the primary key of another table.

CREATE TABLE CUSTOMER
(SID integer,
 FirstName varchar(40),
 LastName varchar(40),
Primary Key (SID ));

CREATE TABLE ORDERS
(Order_ID integer,
Order_Date date,
Customer_SID integer,
Amount double,
Primary Key (Order_ID),
Foreign Key (Customer_SID) references CUSTOMER(SID));

Thanks


December 16, 2010 at 11:46 AM

For more information, visit the following link:

http://www.roseindia.net/sql/mysql-alter/mysql-alter-foreign-key.shtml

Thanks









Related Tutorials/Questions & Answers:
how tohow to create a table with primary key and foreign keyhow to create a table with primary key and foreign key
how tohow to create a table with primary key and foreign keyhow to create a table with primary key and foreign key  how to create a table using...), Primary Key (SID )); CREATE TABLE ORDERS (Order_ID integer, Order_Date date
Foreign key update table
Foreign key update table  How to update table that has the foreign key in SQL..?   ALTER TABLE YourTable ADD CONSTRAINT FK_YourForeignKey FOREIGN KEY (YourForeignKeyColumn) REFERENCES YourPrimaryTable
Advertisements
Mysql Alter Foreign Key
;  A Foreign Key is a field that marks to the primary key of another  table. The use of the foreign key is used to ensure referential... create a table 'publisher'. The Table 'publisher' has primary field name
How to create primary key using hibernate?
How to create primary key using hibernate?  Hi, How to create primary key using hibernate? Thanks
SQL Alter Table Primary Key
SQL Alter Table Primary Key       Alter a Table Primary Key in SQL modifies the existing table and adds a primary key. Create Table Stu_TableADS_TO_REPLACE_1 SQL
Create primary key using hibernate
Create primary key using hibernate  How to create primary key using hibernate?   The id element describes the primary key for the persistent class and how the key value is generated. ADS_TO_REPLACE_1   
Adding A Primary Key to an Existing Table
Adding A Primary Key to an Existing Table   Been trying to add a primary key to a MySQL table using Java for two days with no success. I'm new...(); alterStatement.executeUpdate("ALTER TABLE machine ADD PRIMARY
alter table add foreign key mysql
alter table add foreign key mysql  Hi, How to add foreign key in mysql using the query 'alter table add foreign key mysql' Thanks   Hi, We can use the following query: ALTER TABLE emp_address ADD FOREIGN KEY (emp_id
changing primary key of parent table
changing primary key of parent table  I want to change one primary key from a table where primary key is auto created? How can I do that? I have tried UPDATE person SET personid=3494 WHERE personid=8483; and i get the following
Mysql Alter Table Primary Key
an example from 'Mysql Alter Table Primary Key'. To understand this example, we create.... The createtable employee create a table employee with  Empid as primary key. ... Mysql Alter Table Primary Key   
how to use foreign key in java
, first name varchar(10), primary key(id) ) CREATE TABLE table2 ( id_fk int, last...how to use foreign key in java  I have two tables in my MySQL... CASCADE ) The point is that table2 has a foreign key referencing the primary key
foreign key error in sql
foreign key error in sql  create table matchdetails(mid varchar2(10... varchar2(10),sixes varchar2(10),primary key(mid.pid), foreign key(mid... on foreign key can any one tell me plz how to reference matchdetails
SQL Alter Table Primary Key tutorial
SQL Alter Table Primary Key       Alter a Table Primary Key in SQL modifies the existing table and adds a primary key. Create Table Stu_TableADS_TO_REPLACE_1 SQL
can we update table in hibernate with out primary key in table?
can we update table in hibernate with out primary key in table?  can we update table in hibernate with out primary key in table
hibernate Foreign key
using set methods in orders table in feild P_Id which is foreign key. How to insert... 2 following tables CREATE TABLE persons ( P_Id int(11) NOT NULL, LastName...(255) DEFAULT NULL, City varchar(255) DEFAULT NULL, PRIMARY KEY (P_Id
primary key and unique key
primary key and unique key  Whats is mean by primary key and unique key
Foreign key in mysql
, there are foreign keys in some of the tables - does anyone know how to link the foreign key of one table into another table within phpmyadmin so the database...Foreign key in mysql  Hi I am creating a website and linking
primary key and unique key
primary key and unique key  hello, What's the difference between a primary key and a unique key?   hii,ADS_TO_REPLACE_1 Unique key.... Primary key: columns entry of duplicate as well as null values are restricted
SQL Primary Key
'SQL Primary Key'. To understand and grasp this example, we create a table 'users... in a database table. The Primary Key of the Table does not include NULL values. In SQL  Each Table should have primary key and have only one primary key
Mysql add primary key
rows in set (0.00 sec) Query to add primary key into the Table...'. mysql> alter table employees -> add primary key (empid... data type of Table named employees after adding primary key:ADS
Mysql Alter Column Primary Key
Key'. To understand an example, we create a table employees whose primary key...;    Mysql Alter Column Primary Key is used to modify table and redefine the Primary Key Column in a table. Understand with ExampleADS
SQL PRIMARY KEY Constraint
a unique values. It should contain NULL values. The Table contain a primary key and each table have only primary key. Understand with ExampleADS...; statement is used to create a table 'Stu_Class_10'.The following SQL creates a PRIMARY
What is a "primary key"?
). A primary key can consist of one or more fields on a table. When multiple fields...What is a "primary key"?  What is a "primary key"?   Hi, Here is the answer,ADS_TO_REPLACE_1 A primary key is used to uniquely identify
crud operations with foreign key constraint.
crud operations with foreign key constraint.  I neeed to know how to perform crud operations in mysql with foreign key constraint using mvc architecture i.e using servlet jsp and bean. please provide all the code so that i can
composinte primary key in hibernate
composinte primary key in hibernate  I am facing following problem, Inside the database(mssql), i have created a table without primary key... primary key with all the columns of the table and hibernate s/w has created two pojo
difference between a primary key and a unique key?
. But by default primary key creates a clustered index(physical sorting of a database table...difference between a primary key and a unique key?  What's the difference between a primary key and a unique key?   Hi, The column holding
SQL PRIMARY KEY Constraint
to create a table 'Stu_Class_10'.The following SQL creates a PRIMARY KEY... values. It should contain NULL values. The Table contain a primary key and each table have only primary key. Understand with ExampleADS_TO_REPLACE_1
How to auto increment primary key in mysql...
How to auto increment primary key in mysql...  How to auto increment primary key in mysql... and one more thing i need to get auto increment value in front end each time for inserting the value[JSP
SQL Auto increment Primary Key
primary key field in the table "employee_roseindia"... SQL Auto increment Primary Key       SQL Auto increment Primary Key is used to allow a unique
hibernate annotations with composite primary key
to use hibernate annotations in case of composite primary key in one table. I tried like this, I have created a table without primary key. By default mssql has created a composite primary key with all the columns of the table. table
JDBC insert that returns primary key
JDBC insert that returns primary key  How to write code for jdbc insert that returns primary key? Help me fast Thanks   Hi, Following code can be used: //Add record into database String queryInsert = "insert
Difference between not null and primary key in mysql
Difference between not null and primary key in mysql  Explain not null and primary key in mysql
ModuleNotFoundError: No module named 'django-uuid-primary-key'
: No module named 'django-uuid-primary-key' How to remove the ModuleNotFoundError: No module named 'django-uuid-primary-key' error? Thanks   ...ModuleNotFoundError: No module named 'django-uuid-primary-key'  Hi
Define sequence generated primary key in hibernate
Define sequence generated primary key in hibernate  How to define sequence generated primary key in hibernate?   Use value "sequence...="table">SEQUENCE_NAME</param> <generator> </id>
inserting into mysql database with uid to be primary key and autoincrement
. In the database table, set the uid as the primary key and auto-increment. Then, whenever...inserting into mysql database with uid to be primary key and autoincrement  hello, i am new to jsp and facing problem in creating a database entry
query regarding auto increment primary key
query regarding auto increment primary key  i want to use s1,s2.... as my auto increment primary key.cant i do this in mysql
SQL Alter Table
. The modification in table relates to add columns, rename column and add primary key... as primary key in the table Stu. ADS_TO_REPLACE_5 Alter Table Stu add primary key (id) ; Describe Stu
Get information about foreign keys used in a table.
Get information about foreign keys used in a table.  How can I get information about foreign keys used in a table
Identify correct and incorrect statements or examples about an entity bean's primary key and object identity.
an entity bean's primary key and object identity. Prev Chapter 8... and incorrect statements or examples about an entity bean's primary key and object... of an entity object on the basis of its PRIMARY KEY
How to design key, design key, key
How to design key       It has been made easy now to design a key by this example, just... File: Create a new file and take appropriate size of the file.ADS
Mysql Alter Unique Key
Unique Key'. The example create a table 'employee' with required fieldnames and datetype respectively. The table has a ID as Primary Key.  Create table "employee":  CREATE TABLE `employee` ( 
How To Create a Table.
How To Create a Table.  How To Create a Table?   Hi friends, If you want to create a table, you can run the CREATE TABLE statement..._config.php"; $sql = "CREATE TABLE user_info(" . " id INTEGER NOT NULL" . ", name
how to create a table
how to create a table  create table tablename (name varchar(10),name.... Use the following query: create table tablename (name varchar(10),address varchar(10)); For more information, visit the following link: Java Create
I determine where a given table is referenced via foreign keys.
I determine where a given table is referenced via foreign keys.  How can I determine where a given table is referenced via foreign keys
Define candidate key, alternate key, composite key.
Define candidate key, alternate key, composite key.  Define candidate key, alternate key, composite key
MySQL Create Table
MySQL Create Table       Here, you will read the brief description about the MySQL create table. The CREATE TABLE statement is used for creating a table in database. 
PHP How to Create Table
PHP Create Table: In every database we need to create table, tables... by a row. To create a table we need to create a database first and then open it. (To know how to create and open a database please visit our web page: http
How to add key value pair in Java
How to add key value pair in Java  Hi, I have to store the key and value pair in Java. How to store key value pair in Java? Thanks   Hi... Table. Thanks
How we can create a table through procedure ?
How we can create a table through procedure ?  How we can create a table through procedure
JDBC: Create Table Example
. A table contains unique field called primary key which uniquely identify your...JDBC: Create Table Example In this section, we are going to create table using JDBC and using database MySql. Create Table : Database table is collection

Ads