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What are the three classes of SQL expression?
SQL expression consists of three clauses:
Select
From
Where
Question: (a) Prepare an ERD for the scenario given below. (b) Convert the ER diagram produced in (a) above into its physical design. You have to choose an appropriate Pri
Example RELATION SCHEMA for STUDENT: STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE
external view of DBMS in healthcare department?
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
What is Relational calculus? Relational calculus is a Non- Procedural language.
E-R Model This data model is based on real world that consists of basic objects named entities and of relationship among these objects. Entities are illustrated in a database
Draw an ER diagram that represents the information described below. Show all entity sets, relationship sets, primary keys, and the mapping cardinality of the relationship sets.
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
What are the different integrity constraints in RDBMS? The various integrity constraints in RDBMS are as: Primary Key: primary key is a grouping of one or more attributes
Explain recovery process after system failure using checkpoint. Ans: Checkpoint scheme or method is an extra component of the log based recovery system. This scheme is used to
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