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Describe briefly models which define the operations on classes. The three models which are used to define operations on classes are as: Object Model = data dictionary + Obje
Increases efficiency : Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, there
Which is the properties of entities? Attributes is the properties of entities.
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
a publishing company produce scientific books on various subjects. the books are written by authors who specialize in one particular subject. the company employs editors who, not n
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
An object-oriented design process 1. Define the context and modes 2. Designs the system architecture 3. Identifies the principal system objects 4. Identifies concurrency in
List out various user authorization to modify the database schema. a) Index authorization b) Resource authorization c) Alteration authorization d) Drop authorizat
data models are being replaced over years. Reasons and why does that happen?
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
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