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In how many parts events are classified
Events are classified as four types in UML
1. Signals
2. Calls
3. Passing of Time
4. Change in State
How do I use strap on?#
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
FDs in Relationships: Enrols Relationship: None as it is many to many Teaches Relationship : Course code → Instructor Instructor → Course code The next question is:
what would go in order patient#, patient name, patien address, surgeon#, surgeon name, surgery date, surgery type, drug admin
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
Define Deadlock recovery measures To recover from deadlock, the cycle in the wait-for-graph should be broken. The common technique of doing this is to rollbac
What are the advantages of using a DBMS? The benefits of using a DBMS are a) Controlling redundancy b) Restricting unauthorized access c) Giving multiple user interfac
Define data model? A data model is a collection of conceptual tools for explaining data, data relationships, data semantics and consistency constraints.
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
what do you mean by consistency in rdbms?
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