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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.
If one requires to access data using Logical Database , the use of events is unavoidable. Yes, if someone wants to access data using Logical database then the use of events
Optimistic Concurrency Control Is locking the only way to stop concurrency related problems? There exist some other ways too. One such way is known as an Optimistic Concurrency
Define the terms i) Key attribute ii) Value set Key attribute: An entity type usually has an attribute whose values are exact from each individual entity in the collection. Su
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
WHAT IS SQL
Create Student DB and execute Insert query? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, course
Increases efficiency : Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, there
i want help to complete my task
explain in details about one to one binary relationship
Given the following relations TRAIN (NAME, START, DEST) TICKET (PNRNO., START, DEST, FARE) PASSENGER (NAME, ADDRESS, PNRNO.) Write SQL expressions for the following queries: No
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