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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 - ...
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Functions of Logistics

# Functions of LOGISTICS 

Transportation - quick delivery may be for emergency , it can be costly transportation .

Warehousing - Always required in logistics to keep the product or inventory there .

Material handling - Movement of material from one place to another ( loading and unloading ), So that product reaches safely to customer 

Inventory management - require in large scale business , to manage the inventory , need to know what to sell where and how much , each market has different demand .

Packaging- Packing the Product to ensure safe delivery .

Customer service - Ensuring Customer is satisfied 

Flow of information and material - Flow of information is a 2 way Communication but material is one way communication 

our customer is Kashi based and we are in Churchgate 

What we are going to communicate to customer through the entire process ?

Date, time ,charges, you will receive messages of order being processed , in transit or reached at the city hub , details of the delivery person , required otp and Order delivered message .

The buyer or customer is going to communicate  through the process ?

- Their address 

- contact details 

- Preferred time of delivery 

- Order status 

- Package where it is lying 

- Preferences they like from our collection .








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