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Constraints

NOT NULL CONSTRAINT -    Ensures that a column cannot have a null value. DEFAULT CONSTRAINT -    Provides a default value for a column when none is specified  UNIQUE CONSTRAINT -   Ensures that all values in columns are different  CHECK CONSTRAINT -   Makes sure that all values in a column satisfy certain criteria  PRIMARY KEY CONSTRAINT -   Used to uniquely identify a row in the table  FOREIGN KEY CONSTRAINT -   Used to ensure referential integrity of the data  Primary Key - is used uniquely to identify each row in a table . It can consist of one or more columns on a table . When Multiple columns are used on a table it is called composite key.  Foreign Key - Foreign key is a column or columns that references a column most often primary key of another table . The purpose of foreign key is to maintain referential integrity of the data. Pg admin  Data base - training - right click on training - query click  Always add semi colen to run the query  Int - integer  varchar - variable charact
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Importance of International Business

 Importance of International Business 

1. Earn Foreign exchange - International business exports its  goods and services all over the world . This helps to earn valuable foreign exchange . This foreign exchange is used ton pay for imports.

2. Optimum Utilisation of resources - make optimum utilisation , because it produces goods on a very large scale and utilises them all over the world .

3. Achieve its objectives - The main objective of international business is use the best technology and has best employees and managers . it produces high quality products.

4. Spread business risks- It does all business all over the works . A loss in one country can be balanced by a profit in another country . The surplus goods in one country can be exported to another country .

5. Improve organisation efficiency - Without efficiency , they will not be able to face the competition in international trade . they will use the modern technology to improve their efficiency . Hire high skilled employees .

6. Get benefits from Government - It get benefits from government , facilities , concessions and tax benefits .

7. Expand and diversify - it earns high profits and get financial help from government .

8. Increase competitive capacity - Spends a lot of money on advertising to stay relevant in the market .

9. Economies of scale - Large scale of production make economies of scale . With increase in production per unit of cost of producing goods down which helps them in earning large profits.

10. Cost advantage - Producing goods in one country and selling in the other. This helps in reducing cost of products  . 

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