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What is DataWarehousing?
Subject-oriented, meaning that the data in the database is organized so that all the data elements relating to the similar real-world event or object are joined together;
Time-variant, meaning that the changes to the data in the database are tracked and recorded so that reports can be produced showing changes over time;
Non-volatile, meaning that data in the database is never over-written or deleted, once committed, the data is static, read-only, but retained for future reporting.
Integrated, meaning that the database having data from most or all of an organization's operational applications, and that this data is made consistent.
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Partial Key : It is a group of attributes that can uniquely identify small entities and that are related to same base entity. It is sometime named as Discriminator. Altern
Describe the development process of Object oriented methods Object oriented methods have roots which are strongly anchored back in the 60s, functional and structured methods we
What is an entity relationship model? The entity relationship model is a set of basic objects known as entities and relationship between those objects. An entity is a thing or
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
What are the object-oriented approaches Software systems which are designed with structured design methodology never support some of desired quality attributes for example reus
CAN SOMEONE HELP ME WITH ENTITY DIAGRAMS IN FIRST NORMAL FORM?
Mention the purpose of SID and SOD lines SID (Serial input data line): It is an input line by which the microprocessor accepts serial data. SOD (Serial output data line)
Question: This question refers to the database schema. a) Express the following queries in SQL: (i) Write the SQL code that will create the table Company. Your answer sh
What is meant by mean time to failure? The mean time to failure is the amount of time that the system could run continuously without failure.
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