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I need help for my Uni assignments
Describe in brief about the Sequence Diagrams Sequence diagrams are interaction diagrams which emphasize time ordering of messages. In UML, it is shown as a table which shows
Having clause This clause is used for producing conditions on grouped information. Example: Find maximum salary and department number of those departments where maxim
why are older data models are being replaced by new data models
Define and differentiate between ordered indexing and hashing. Ans: Ordered indexing: To gain fast random access to records in a file, we can make of an index structure. Every
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Explain the Dynamic Hashing Techniques There are two methods in it: extendible hashing - stores an access structure in addition to the file, and therefore is somewhat identica
Draw an ER diagram that shows the organization of a simple student database. The database captures the information about letter grades obtained by university students who enrolled
Define what Immediate database modification technique uses? Ans: Both undo and redo.
What is a security? Securities are claims on financial assets. They can be illustrated as "claim checks" which give their owners the right to receive funds in the future. Sec
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