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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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Features of International Finance

 Features of International Finance 

1.Multiple currencies - Dollar , Yen , Euro , Indian rupee , Dhiram , CAD , AUD, GBP(Great Britain Pound), SGD , HKD etc. You should know as many currencies . Internationally currency is a bigger market , which is $7.5 trillion per day in April 2022. It has large market because everyone can participate in any timezone. It is the most flexible market. The only problem compromises is that this market does not have particular regulation . There are some foreign institution they operate foreign market but we can’t rely on broker . There are more chances of fraud to happen. Currency is globally present which is the reason market is bigger.In India itself there are 4 or 5 currency such as USD , GBP , JPY , EUR . USDINR83, You have to pay 83 Rupees.

2.Various Players - Importer , exporter , Investor , tourist , forms , MNC, Central bank , banks , Wealth Management firms, hedge funds. As. a tourist you require currency , it would be difficult for currency which is rare. A bank will just give call to some other bank. We are seeing bank stocks has been tremendously running. PSU 's are invested by government . They will ask other banks locally , if not locally available then that bank will call foreign bank available in country. There are many software available where we can know which bank has what all currency available , we get benefit of conversion . 

3. Opportunity  - There are number of of opportunity , everyone is revising our Indian GDP numbers by 6%.

4. FOREX- Different exchange rates of different countries currency.

5. Risk - If we say equity is riskier , then currency is more riskier than equity , There are many app like octafx where we buy stocks here people have invested their money in currency , if you do any transaction 15-20% gets vanished , that created a scam, Misuse of funds happens . India's recently income got from GST. Wherever we invest there is risk involved because no proper regulatory body is there. JustFx, Binance can be a trust worthy platform because available.

6. Imperfect Market - There are n number of countries , Because of different countries having different situation  there is different market condition. How much debt is faced by Srilanka , some countries is going while the other is not . In Today’s scenario , it is preferred by people to invest in Countries with better growth and investment opportunities. Like UAE counties , saudi , Switzerland . Highest paid jobs country is Luxembourg , Switzerland


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