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An object-oriented design process
1. Define the context and modes2. Designs the system architecture 3. Identifies the principal system objects 4. Identifies concurrency in the problem 5. Handling boundary conditions 6. Develops design models 7. Specifies object interfaces
Object oriented design is concerned with creating OO model of software systems to implement identified requirement during analysis phase.
Figure: Software life cycle activity
Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
Explain CNT in the respects of QBE ? CNT: It is one of the aggregation commands given in QBE. It is used to identify number of tuples
Attributes and its types explain?
Explain the Management of Data Store Every system irrespective of its nature of application requires storing permanent data for consequent use in problem solving. Some objects
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
Explain the function of input controls. Identify four types of input control and explain the function of each. Provide an example of a data integrity error that could occur i
Consistency: This property makes sure that a complete transaction implementation takes a database from one consistent state to another consistent state. If the transaction fails e
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Define the basic operations of the relational algebra? Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot
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