Describe entities in the context of data models
What will be an ideal response?
An entity is something that the users want to track. Examples of entities are Order, Customer, Salesperson, and Item. Some entities represent a physical object, such as Item or Salesperson; others represent a logical construct or transaction, such as Order or Contract. Entities have attributes that describe characteristics of the entity. Example attributes of Order are OrderNumber, OrderDate, SubTotal, Tax, Total, and so forth. Entities have an identifier, which is an attribute (or group of attributes) whose value is associated with one, and only one, entity instance. For example, OrderNumber is an identifier of Order, because only one Order instance has a given value of OrderNumber.
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Which of the following is an example of an input control test?
a. sequence check b. zero value check c. spooling check d. range check
Physical distribution activities include all of the following EXCEPT which one?
A) order processing B) warehousing C) materials handling D) transportation E) order getting
The growth of box stores did not reach original expectations, in large part, because _____
a. they lacked brand continuity b. they could not fulfill customer one-stop shopping needs c. they were not price competitive on nonfood items d. store managers could not handle widely divergent product lines
A(n) ____________________ statement does not use a selector but individually evaluates conditions that are placed in the WHEN clauses.
Fill in the blank(s) with the appropriate word(s).