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Draw an E_R Model for the following:
An organization uses number of items of a equipment to generates goods. Each item is at one LOCATION, of one TYPE and has a DETAILED_DISCRIPTION. Faults on the equipment are identified through a unique FAULT_ID and are reported at a TIME_REPORTED. Any number of persons may be assigned to a fault and work on the fault until it is fixed. The TIME_FIXED is recorded as is the TIME_SPENT through each person on a fault. Any number of elements may be used to repair a fault. The QTY_USED of each part is recorded against the fault. Each part is identified through a PART_ID and has a given weight and MAX_DIMENSION and can have any number of colors.
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What is inheritance? Define it in detail? Inheritance Inheritance can be at the levels of types, or at the level of tables we first consider inheritance of types, then i
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
Define value set? Value set: It is a set of values. You do not always need a user to enter junk free text within all the fields. Therefore, Oracle Apps uses value set to valida
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
What is Natural Language Interfaces? Natural Language Interfaces - These interfaces accept requests written within English or a few other language and attempt to "understand" t
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