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What is the job of a infastructure analyst in database modeling?
A data model is a collection of conceptual tools for describing data, data relationships, data semantics, and consistency constraints.2 data models : the entity-relationship model and the relational modelER model is a high-level data model. It is based on a perception of a real world that consists of a collection of basic objects, called entities, and of relationships among these objects.The relational model is a lower-level model. It uses a collection of tables to represent both data and the relationships among those data.
What is the difference between data model and database model?
A database is a collection of tables that is used for some purpose (typically an application of some sort). A database model is a description of that database, and describes how the tables relate to each other. Typically, a model is designed first, then the actual database is implemented using the model as a blueprint.
What are the dimerits of waterfall model?
In waterfall model, once we come out of the phase, there is no chance of modifying it again. This is one of the major drawback for waterfall model.
What is Waterfall Solutions?
Waterfall is one of the software development life cycle model. Waterfall model has five stages.
Waterfall model advantages and disadvantages?
Advantage of waterfall model : It is simple and easy to use. Dis Advantage of waterfall model : no user feedbacks are taken.
What is the network model in data base?
In network data model , the records are related to each other by means of a link. A record is collection of fields , each of which contains only one data.
How the waterfall model and prototyping model can be accommodated in the spiral process model?
Expalin different between waterfall model and prototyping model ? Expalin different between waterfall model and prototyping model ?
What is the diffference between waterfall model and modified waterfall model?
Modified waterfall model verified and validate the user requirements for every phase. Meanwhile, waterfall did not, it only verify and validate user requirement at the end of the phase.
Explain how both the waterfall model of the software process and the prototyping model can be accommodated in the spiral process model?
the waterfall model gives us prototyping , and spirl model gives us product , so the set of the waterfall accommodat in the spirl to gives us this product.
Waterfall model and prototyping model can be accommodated in spiral model?
1.spiral model can be accommodate in prototyping and waterfall model. it is a model of iterative process as prototyping and also a systematic approach to solve a problem as in waterfall model. 2. spiral model take problem as a series of step to solve a problem as in waterfall, and take the contribution of users or customers in each phase as in prototyping model.
Which model is simplest model in Software Development?
Waterfall model
What is a waterfall model and describe it?
Waterfall is a system development life cycle
