Skip to main content

Featured

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
Post a Comment
Read more
Labels

Logistics Performance Cycle

 Logistical performance cycle- whenever the order is performed it is the same activity which is being repeated with every order.

There is cycle with those same activities . When a firm receives an order , it carries out certain activities to complete the order. These activities are recurring in nature as they need to be carried out with every order . Thus a cycle is formed of these activities , which is called performance cycle .

Types -

Procurement performance cycle -Same as inbound logistics 

Manufacturing support performance cycle - Same as in process logistics

Physical distribution performance cycle - Same as outbound logistics 


Labels:

Comments

Post a Comment

Popular Posts