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Define the concept of Object Diagram
An object diagram shows a set of the objects and their relationships with each other at a point of time. In a static view, object diagram is used to model interactions which consist of objects that collaborate without any message passed between them. It contains graphical contents, name, constraints, notes, packages and subsystems. The notation for objects and relationship among objects is shown as:
Figure: Relationship among objects
A database for the Service and Maintenance (SM) section of a Computer sales and service Company has to be developed. SM gives after sales service to customers. SM branch has a numb
Two Phase Locking (2PL) The two-phase locking protocol having of two phases: Phase 1 : The lock acquisition phase : If a transaction T needs to read an object, it wants to
File Manager File manager handles the allocation of space on disk storage. It starts and maintains the list of structures and indices described in the internal schema that is
Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): 2160_Convert the following ER - diagram into a
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
HOW MANY TYPES OF VIEWS
The dataset " CFOLYMPICS.XLS " contains the observations used in the above article. The definitions of the variables are also included in this spreadsheet. However, for the purpo
recovey techniques based on deferred update and immediate update
Project Description: Hi I'm seeking someone to make my dBase application work. I know it's not a 'modern' language but it's what I know. I have written an order program and I ne
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