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Which database level is closest to the users?
External database level is closest to the users.
Question 1 Draw a Data Flow Diagram for a University scenario Question 2 Discuss the following with suitable examples Relational Algebra Operators Database Pla
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
What do you mean by persistence? How you will make your data persistent? Persistent data is the data, which has a longer lifetime than program which has created it. Enabling th
What is a view? Make a view of EMP table named DEPT 20, to display the employees in department 20 and their annual salary. Ans: View is a virtual table that does not consist
Surgeons identified by doctor ID (DOCID) operate on patients identified by patient ID (PATID) in operating theaters identified by room numbers (ROOMNO). Each surgeon can operate on
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
What do you understand by transitive dependencies? Define with an example any two problems that can take place in the database if transitive dependencies are available in the datab
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
Explain What is Relation? A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
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