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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

Porter's 5 forces Model -2

 Industry would mean telecom 

If company is mentioned Jio 

One of the companies is competitors 

A force is something that moves in the particular direction whether pull or push .Example - gravity .

Porter exist within one industry and affect them within that industry . 

example- In a fruit market there will many sellers , they will have rivalry among themselves.

Rivalry among competitors 

Rivalry - diversity - no diversity there will be more rivalry 

number of competitor - there will be more rivalry 

Industry concentration - Some industry is concentrated in some areas , example diamond mining will have to concentrate in that particular area.

Industry growth - Growth will have more market share . 

Quality differences - No quality differences will have between the offering of competitors then the rivalry is more .

Brand Loyalty- If customer don't have brand loyalty , There is no certainty more rivalry will be there.

Barriers to exit - So a petroleum industry is not easy to exit from that industry because lot of investment is made on purchasing machinery , labour , license .

A home bakery to exit is very easy , i can sell the materials is easy 

High barrier - high rivalry 

Switching cost - Cost involved in consumer from one product to another . 

Example - mixer grinder part is broken , no mixer ,  same bowl will be preference . No new mixer is preference . 

IOS to android switching is also very difficult .

High switching cost - Less rivalry 


Threat of new entrants - 

Threat can be high or low . There is no limit in number.

Barriers to entry - how difficult or easy is it to enter the industry 

High barrier - example railway. Low threat 

Economies of scale - Existing company like Jio has already achieved economies of scale ( Cost of production coming down ), Jio charges lesser price from consumer. The company is able to produce at lower cost . 

New entrant cannot match it, they have high cost of production. 

Brand Loyalty - New entrants will not be there if customer is loyal

Capital requirements - High capital requirements no new entrants

Cumulative experience - Generation to generation a industry is working so new entrant will not come . 

Government policies - Railway , aviation limit the entry

Access to distribution channels - Mining industry , if one area of Jharkhand is good at mining , if they monopoly they have access to distribution channel , checking from police will be less .

Switching costs -  Same as above


Bargaining power of Buyers and Suppliers

Fruit Market example - The fruit is coming from farmers or middlemen . The buyer are the people who will consume it .

Suppliers case

Farmers produce and sell to sellers , buyers are residents nearby living .

If there are number and size of suppliers high they have more bargaining power.

A unique product of supplier will have low bargaining power .

Focal company ability to substitute - Easy substitute the supplier there will be more bargaining power in the hands of the fruit sellers .

Buyers 

Number of customers - When number of customers are more the bargaining power of customer will high . 

Size of each customer order -Let us say during office break , 20 colleagues are going to fruit shop to eat , cutting , the customer will have more bargaining power.

Differences between competitors- A fruit seller who have dragon fruit is different from competitors , then there will be more bargaining power .

Price sensitivity - If a price sensitive market , customer has bargaining power .

Buyers ability to substitute- A buyer can substitute .

Buyers information ability - Doctor fees cannot be bargain

Switching costs- If it is easy from one service provider there will be more bargaining power .


Threat of substitutes products -

If you think of CAR industry . The car is a threat of industry .

Number of substitute product - more substitute more threat 

Buyer propensity to substitute - if consumer is ready to use the substitute then high threat 

Relative price performance of suppliers 

Perceived level of product 

Switching cost


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