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Describe the Association: Design
Before we describe association design let us define association "Association is set of links between two objects in the object model". It is helpful in finding paths among objects. It is a conceptual entity, which could be used for modeling and analysis. At final phase of advance object design, we must use strategy for applying association in object model. Association is also termed as "a collection of links between two objects having common structure and common semantic".
Smart Alex Catering Sevice (SACS) is a company offering top class catering staff for prestigious events. The company employs approximately 200 hourly paid contact staff - chefs,
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
Determine the steps of path in association network You can analyse use of paths in association network in the following steps: Examine every operation and see what asso
Which operations need the participating relations to be union compatible? A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatibl
If one requires to access data using Logical Database , the use of events is unavoidable. Yes, if someone wants to access data using Logical database then the use of events
Explain the term- Periodic recomputation Periodic recomputation: Base values are often updated in bunches. Sometimes, it is possible to just recompute all derived attributes p
Use of partial data by applications : In common, applications work with views rather than whole relations. Thus, it may be more appropriate to work with subsets of relations rather
crete a data base relationship model Entity: Students; Professors; Dormitories buildings; Attributes of students: Name; Address; Dorm;
Hashed File Organisation Hashing is the most common form of purely random access to a database or file. It is also used to access columns that do not have an index as an optimi
Which element in the database can modified by changing the data dictionary? Data elements in the database can be changed or modified through changing the data dictionary.
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