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In which format database schema is written ?Data base schema is written in the DDL format.
What is Data Storage? The storage structures and access methods used by database system are specified by a set of explanation in a special type of DDL called data storage-defin
Discuss the importance and characteristics of database backup and recovery procedures, then describe the actions that must be detailed in backup and recovery plan
What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha
UNION If R1 and R2 are two union compatible relations then R3 = R1 ∪ R2 is the relation having tuples that are either in R1 or in R2 or in both. In case, R3 will have tuples
What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.
What is a Linked Server? Linked Servers is a method in SQL Server by which we can add other SQL Server to a Group and query both the SQL Server dbs using T-SQL Statements. With
Define what Immediate database modification technique uses? Ans: Both undo and redo.
coventions for displaying an ER schema as ER diagram
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
What is trigger Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
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