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Explain the term- Data Flows
Data Flows: A data flow connects output of an object or process to input of another process or object. It represents an in-between data value within a computation. Data flow states direction of flow of data from the source objects to destination object.
In Database software have only pure security or some dis secured by administrator?
case study
I have to solve a problem using access
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
Q. Define a weak entity set and its identifying relationship. List the necessary conditions for a meaningful identifying relationship set of a weak entity set. Entity is a t
Mappings between Levels and Data Independence The 3 levels of abstraction in the database do not exist separately of each other. There must be some correspondence, or mapping
What are data models? Explain it detail? Entity relationship model Rectangles Ellipse Diamonds Lines Relational model Relational model use a collection
A buyer for a large department store chain must place orders with an athletic shoe manufacturer six months prior to the time the shoes will be sold in the department stores. In par
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
what do you understand by enhanced entity-relationship
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