Write an unambiguous definition for each attribute

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Write an unambiguous definition for each attribute

If you disagree, define additional entity types, explain why they are necessary, and modify PE Figure accordingly. Any additional entities should be properly modeled in an E-R diagram similar to Figure Use these DFDs to identify the attributes of each of the six entities listed in this case plus any additional entities identified in your answer to Question 1.

Write an unambiguous definition for each attribute. Then, redraw PE Figure by placing the six and additional entities in this case on the diagram along with their associated attributes. Answers will vary, according to the answer to Question 1. Using your answer to Question 2, designate which attribute or attributes form the identifier for each entity type.

Explain why you chose each identifier. Using your answer to Question 3, draw the relationships between entity types needed by the system. Remember, a relationship is needed only if the system wants data about associated entity instances. Give a meaningful name to each relationship.

Specify cardinalities for each relationship and explain how you decided on each minimum and maximum cardinality at each end of each relationship. Redraw your final E-R diagram in Microsoft Visio.

Assuming only the attributes you show on the E-R diagram, would any attribute be moved from the entity it is currently associated with to an employee entity type if it were in the diagram? Why or why not?

write an unambiguous definition for each attribute

Not having an employee entity in the diagram means that employee activity while interacting with the system cannot be tracked. What date-related attributes did you identify in each of the entity types in your answer to Question 4?

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Why are each of these needed? Can you make some observations about why date attributes must be kept in a database, based on your analysis of this database?

Date objects are needed anytime the date or time of the creation or update of the object are needed especially in recording transactions and the like.Ambiguity is a type of meaning in which several interpretations are plausible.A common aspect of ambiguity is initiativeblog.com is thus an attribute of any idea or statement whose intended meaning cannot be definitively resolved according to a rule or process with a finite number of steps.

(The ambi-part of the term reflects an idea of "two", as in "two meanings".). I never meditated. I was somewhat curious about the subject in my early 20s, but I can’t get myself thru more than a paragraph of text with mysticism without thinking it’s a bunch of crap and that someone is probably trying to scam me somehow.

Write an unambiguous definition for each attribute. Then, redraw PE Figure by placing the six (and additional) entities in this case on the diagram along with their associated attributes. PE FIGURE Initial E-R for Petrie’s customer loyalty program. Abstract. RELAX NG is a simple schema language for XML, based on and.A RELAX NG schema specifies a pattern for the structure and content of an XML document.

Last Close (of a File). When a process closes a file, resulting in the file not being an open file within any process.

Line. A sequence of zero or more non- s plus a terminating. Entity–attribute–value model (EAV) is a data model to encode, in a space-efficient manner, entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest.

Such entities correspond to the mathematical notion of a sparse matrix.

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