Sunday 29 May 2016
Many-To-Many Hibernate Mapping
Many to Many Mapping : A many-to-many relationship refers to a relationship between tables in a database when a parent row in one table contains several child rows in the second table, and vice versa. Many-to-many relationships are often tricky to represent.
Many-to-Many mapping is usually implemented in database using a Join Table, for example we can have Cart, Item table and Cart_Items table for many-to-many mapping. Every cart can have multiple items and every item can be part of multiple carts, so we have a many to many mapping here.
1. Create Database Name is manytomany and Three Table are item, cart_items and cart.
Open NetBeans See The Menu Bar go to the file Menu Click on the New Project(Ctrl+Shift+N) and Select Left site categories Java/java web and Project categories to Right Site Project java/web Application .You have to give The Program Name "manytomany". if you wont to save Project Location you can Browse and File save on the direction place and Gone a default Place and Now uncheck/check the check box and click on the next button, select server settings and select the frameworks like Hibernate and go to the finish.
2. hibernate.cfg.xml
3. hibernate.reveng.xml
4. Item.java
5. CartItems.java
6. CartItemsId.java
7. Cart.java
8. Item.hbm.xml
9. CartItems.hbm.xml
10. Cart.hbm.xml
11. ManyToMany.java
OUTPUT:
Many-to-Many mapping is usually implemented in database using a Join Table, for example we can have Cart, Item table and Cart_Items table for many-to-many mapping. Every cart can have multiple items and every item can be part of multiple carts, so we have a many to many mapping here.
1. Create Database Name is manytomany and Three Table are item, cart_items and cart.
Open NetBeans See The Menu Bar go to the file Menu Click on the New Project(Ctrl+Shift+N) and Select Left site categories Java/java web and Project categories to Right Site Project java/web Application .You have to give The Program Name "manytomany". if you wont to save Project Location you can Browse and File save on the direction place and Gone a default Place and Now uncheck/check the check box and click on the next button, select server settings and select the frameworks like Hibernate and go to the finish.
2. hibernate.cfg.xml
3. hibernate.reveng.xml
4. Item.java
5. CartItems.java
6. CartItemsId.java
7. Cart.java
8. Item.hbm.xml
9. CartItems.hbm.xml
10. Cart.hbm.xml
11. ManyToMany.java
OUTPUT:
Sunday 15 May 2016
One-To-Many Hibernate Mapping
One to Many Mapping: A single attribute of a table relating with multiple attributes of another table is referred as One to Many mapping.
A department may have multiple employees.
1. Create Database Name is mapping and Two Table are employee1 and department.
Open NetBeans See The Menu Bar go to the file Menu Click on the New Project(Ctrl+Shift+N) and Select Left site categories java web and Project categories to Right Site Project web Application .You have to give The Program Name "OnetoManyMapping". if you wont to save Project Location you can Browse and File save on the direction place and Gone a default Place and Now uncheck/check the check box and click on the next button, select server settings and select the frameworks like Hibernate and go to the finish.
2. hibernate.cfg.xml
3. hibernate.reveng.xml
4. Employee1.java
5. Department.java
6. Employee1.hbm.xml
7. Department.hbm.xml
8. OnetoMany.java
OUTPUT:
1. Create Database Name is mapping and Two Table are employee1 and department.
Open NetBeans See The Menu Bar go to the file Menu Click on the New Project(Ctrl+Shift+N) and Select Left site categories java web and Project categories to Right Site Project web Application .You have to give The Program Name "OnetoManyMapping". if you wont to save Project Location you can Browse and File save on the direction place and Gone a default Place and Now uncheck/check the check box and click on the next button, select server settings and select the frameworks like Hibernate and go to the finish.
2. hibernate.cfg.xml
3. hibernate.reveng.xml
4. Employee1.java
5. Department.java
6. Employee1.hbm.xml
7. Department.hbm.xml
8. OnetoMany.java
OUTPUT:
Saturday 23 April 2016
One-To-One Hibernate Mapping
A one-to-one relationships occurs when one entity is related to exactly one occurrence in another entity. Thus, there will be one primary key which will be mapped with both the entities.
1. Create Database Name is mapping and Two Table are employee and employeedetail.
Open NetBeans See The Menu Bar go to the file Menu Click on the New Project(Ctrl+Shift+N) and Select Left site categories java web and Project categories to Right Site Project web Application .You have to give The Program Name "Mapping". if you wont to save Project Location you can Browse and File save on the direction place and Gone a default Place and Now uncheck/check the check box and click on the next button, select server settings and select the frameworks like Hibernate and go to the finish.
2. hibernate.cfg.xml
3. hibernate.reveng.xml
4. Employee.java
5. Employeedetail.java
6. Employee.hbm.xml
7. Employeedetail.hbm.xml
8. OnetoOnemapping.java
9. output-
1. Create Database Name is mapping and Two Table are employee and employeedetail.
Open NetBeans See The Menu Bar go to the file Menu Click on the New Project(Ctrl+Shift+N) and Select Left site categories java web and Project categories to Right Site Project web Application .You have to give The Program Name "Mapping". if you wont to save Project Location you can Browse and File save on the direction place and Gone a default Place and Now uncheck/check the check box and click on the next button, select server settings and select the frameworks like Hibernate and go to the finish.
2. hibernate.cfg.xml
3. hibernate.reveng.xml
4. Employee.java
5. Employeedetail.java
6. Employee.hbm.xml
7. Employeedetail.hbm.xml
8. OnetoOnemapping.java
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