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Explain about the E-R Diagram
Entity-relationship (E-R) diagram is detailed logical representation of data for an organisation. It is data oriented model of a system while DFD is a process oriented model. ER diagram represent data at rest whereas DFD tracks the motion of data.
ERD doesn't provide any information regarding functionality of data. It has 3 main components - data entities, their relationships and their associated attributes.
Name the commonly used architectural styles. i. Data centered architecture. ii. Data flow architecture. iii. Call and return architecture.
What are business process engineering tools? By modeling the strategic information needs of an organization, business process engineering tools give a "meta-model" from which e
Checks the interfaces among program elements for consistency and adherence to predefined axioms or rules.
What does Level0 DFD represent? Level0 DFD is known as 'fundamental system model' or 'context model'. In the context model the entire software system is shown by a single bubb
What is meant by Data dictionary? The Data dictionary is a prepared listing of all data elements that are pertinent to the system, with precise, rigorous explanations so that b
Q. Discuss the problems faced during software maintenance? The most significant problem during maintenance is that before correcting or else modifying a program the programmer
What does data dictionary contains? Name: The primary name of the data. Alias: other names used Where-used/How-used: A record of processes that use the data or control it
Determine the System Integration the life cycle process. It is the process of putting hardware, software and user together to prepare a system. System Installation I
What are the Controlling Events Between Objects Event is the specification of a important occurrence which has a location in time and space. Examples of events are flight l
State Procedural abstraction. A Procedural abstraction is a named sequence of instructions that has a specific and limited function. Eg: Open Walk to the door, reach out &
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