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20.SQL Server View in Telugu || How to Create VIEW in SQL

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#SQLINTELUGU #VIEW #SQLVIEW #SQLVIEWINTELUGU #SSISintelugu #TABLEAUINTELUGU #Learnerspage #Ckola #Chandrasekkhar #SQL #Telugu
TYPES OF VIEWS:
1) SIMPLE VIEW:
2) COMPLEX VIEW
SIMPLE VIEWS IN SQL:
VIEW IS VIRTUAL / LOGICAL TABLE FOR THE BASE TABLE.
WILL NOT STORE DATA BUT SELECT QUERY STATEMENT IS ONLY STORE.
IT WILL CREATE WITH HELP OF "SELECT STATEMENT" .
COMPLEX VIEW:
WHEN WE ACCESS THR REQ.DATA FROM MULTIPLE BASE TABLES.
IT DOES NOT SUPPORTS ALL DML OPERATIONS ON MULTIPLE BASE TABLES.
IT Also Called as Nonupdatable View
Advantages of views in SQL Server
1.Hiding the complexity of a Complex SQL Query
2.Implementing Row Level Security
3.Implementing Column Level Security
4.Presenting the Aggregated data by Hiding Detailed data
The disadvantage of views in SQL Server
1.The Views cannot be created based on Temporary Tables in SQL Server
2.We cannot pass parameters to SQL Server views
3.We cannot associate Rules and Defaults with SQL Server views
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TYPES OF VIEWS:
1) SIMPLE VIEW:
2) COMPLEX VIEW
SIMPLE VIEWS IN SQL:
VIEW IS VIRTUAL / LOGICAL TABLE FOR THE BASE TABLE.
WILL NOT STORE DATA BUT SELECT QUERY STATEMENT IS ONLY STORE.
IT WILL CREATE WITH HELP OF "SELECT STATEMENT" .
COMPLEX VIEW:
WHEN WE ACCESS THR REQ.DATA FROM MULTIPLE BASE TABLES.
IT DOES NOT SUPPORTS ALL DML OPERATIONS ON MULTIPLE BASE TABLES.
IT Also Called as Nonupdatable View
Advantages of views in SQL Server
1.Hiding the complexity of a Complex SQL Query
2.Implementing Row Level Security
3.Implementing Column Level Security
4.Presenting the Aggregated data by Hiding Detailed data
The disadvantage of views in SQL Server
1.The Views cannot be created based on Temporary Tables in SQL Server
2.We cannot pass parameters to SQL Server views
3.We cannot associate Rules and Defaults with SQL Server views
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