#Super key in dbms free
The keys allow us to be free from this difficulty also. So There should be a way to identify each record separately i.e. There may now be hundreds upon hundreds of such records, some of which may be repeated. A table in a relational database represents a set of records or events of a particular relation. Keys are also used to establish relationships between different database tables and to define different integrity constraints. A key in a DBMS refers to an attribute or set of attributes that help us to distinguish a tuple in a table. Keys are an essential element of any relational database. Before jumping directly to the differences let's firstly understand about keys in the database.
But here in this blog, we will discuss the difference between Superkey Key and Candidate Key. There are many keys that we use in SQL and database like Primary key, Unique key, Foreign key, Superkey, Alternate Key, Composite Key, etc. So there must be some property, attribute, or method through which we can uniquely identify a particular row from the database. But what if we want to access a particular row of a table? Rows don't have any specific name then how can we access a particular row. So if we want to access the data of a particular column we can easily do so by selecting the column with the given name.
Columns have particular names like Aadhar Number, Roll no, Marks, etc.
We know that in Relational Database, we have rows and columns.
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