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Symbols of a data flow diagram
1. Data Flow
Signifies the connectivity between various processes
2. Process
Performs some processing of input data
3. External Entity
Defines destination or source of system data. The entity that supplies or receives information.
4. Data Store
Repository of data
Throw-away prototyping Objective: The principal objective of this model is to validate or to derive the system needs. It is developed to decrease requirement risks.
Q. Define Object and class associations? Object/class associations:- Objects/classes interact with each other. Multiplicity defines how many instances of one object/class can
A one-car taxi company receives an average of 18 calls per day. The receptionist takes down details of the requested journey and relays them to the driver by radio. Each passenger'
Different levels of CMM: 1) Initial (maturity level 1) 2) Repeatable (maturity level 2) 3) Defined (maturity level 3) 4) Managed (maturity level 4) 5) Optimizing (
What is equivalence partitioning? Equivalence partitioning is a black box method that separates the input domain into classes of data. From this data test cases can be derived.
What tasks do checkpoints perform in QTP? Checkpoints in QTP are used to verify information which is expected to be displayed when running test. Following are 8 types of availa
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Q. Explain diffrent types of system testing? System testing System tests are designed to validate a fully developed system to assure that it meets its requirements. There are f
What is Criticality? The degree of impact that a necessity, module, error, fault, failure, or other item has on the operation of a system or development.
A friend has promised to log in at a particular time. However, he needs to be contacted as soon as he logs in. The shell script checks after every minute whether he has logged in o
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