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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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ONLINE CLASSES PRODUCTIVE

               ONLINE CLASSES PRODUCTIVE

  

PEOPLE IN EVERY CORNER THINK BEING ONLINE IS A MOJAR DRAWBACK BUT LET ME TELL YOU , THE PICTURE DOES NOT SEEM TOO BAD AS IT SEEMS TO BE . ONLINE CLASSES CAN  BE PRODUCTIVE AND BE A BURDEN TOO, DEPENDS ON PERSON TO PERSON .HOW YOU ARE USING IT? 

College lectures are not taken by anyone but there might be an exception too where people take it, but our point is how to make it productive, using lots of apps and sites is the major advantage of being online. 

  • CERTIFICATES- You are one place but still getting an advantage of getting a certificate from HARVARD or UNIVERSITY OF LONDON . what do you think ? the deal is not that too bad . Use online class as an advantage and collect as many certificates as you can through various platforms . COURSERA , UDEMY are the most popular apps which helps a person to grow its skill through numerous courses. 
  • PROFESSIONAL COURSES- You are in the college , it means numerous opportunities are at you door step its your call if you are accepting it or rejecting. You may have noticed many of your classmates or peer group people are doing different professional courses. For example- ACCA, CMA USA , CMA INDIA, CFO, CPA and it goes on... so its your take , first identify which suits best to you and then opt for the same and excel it.
  • PARTICIPATION- You are in college and no one is here to tell you how amazing it has the experience of participating in various college fests. so one must grab this opportunity and help yourself to discover the world from the point of view of YOUTH . 
  • CLUBS- The next step be in clubs to do more work in group and get an idea how peer work and college club work is done. What to do when your point does not match with the other core members? What to do when something is cancelled on time? How to balance the pressure? Being in a club position is a different feeling so try your best to get any of the position like HEAD OF ADMIN DEPARTMENT , HEAD OF PR DEPARTMENT , VICE PRESIDENT , PRESIDENT ETC.
  • SOCIAL WELL FARE- An important part is being online and helping the needy by providing them groceries through big basket delivery or medicines through pharmeasy  is something which can help the people in your country . There are various ads in social media platforms where the advertisement is provide for helping the needy ones .


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