Database Management System & Concept of Keys | Class 10 IT Unit 3 Chapter 10 (Code 402) (2022-23)

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Mam what is difference between composite key and primary key

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Mam.. Then what's the difference between composite and candidate key.... Both are similar?

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Composite key have similar data in one column whereas candidate key doesn't have any repitations , two primary key make up candidate key

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Composite or candidate key me difference kya h?

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composite key ---- table mai customer ID and Product ID, 2 logo ki same thi to phir is table mai to primary key hai hi nahi ?

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mam composite primary key and candidate key mai to repeated values thi kisi kisi columns mai to phir un mai se koi bhi column primary key thodi na ban sakta hai ?

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[@Apaarsingh]

Mam plz answer what's the difference between candidate key and composite key i am very confused in these keys. As you told about both of these keys they are looking same what's the difference between them. Plz mam reply

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What is the differences between candidate and composite key???😫

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A candidate key is a unique key (tuple) that can be used as a primary key. Composite key is a key of two or more attributes that uniquely identifies the row (records)

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Customer id is different from other customer id. But, if any customer comes at shop again then he will not get the another id. That's why customer id is same for the customer who came again at Shop.

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