Answer: Extraction phase
Explanation: Transactional database is the data collection capable of undoing the transaction that has not been correctly done. Data warehouse id the place where transaction data is transmitted where different types of databases are stored.
The transmission of the information from transactional database to data warehouse is defined in the extraction phase.The extraction phase works by transforming the data into a particular format. It copes the transactional databases's data to the warehouse by making separate space for deposition of data
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I think it’s internet sorry if it’s wrong
Answer:
1940 – 1956: First Generation
1956 – 1963: Second Generation
1964 – 1971: Third Generation
1972 – 2010: Fourth Generation
2010- : (Present )Fifth Generation
Explanation:
- First Generation Computers (1940-1956):In this Generation the main component of computers were Vacuum Tubes.
- Second Generation Computers (1956-1963):In this generation the main component of computers were Transistors.
- Third Generation Computers (1964-1971):In this generation the main component of computers were Integrated Circuits.
- Fourth Generation Computers (1972-2010):In this generation the main component of computers were Microprocessor
- Fifth Generation (2010-Present):In this generation the main component of computers is Artificial Intelligence
Relational tables need to be DISTINCT to help avoid duplicate data.
Distinct is defined as readily distinguished or recognizably different in nature from something of similar type.
Being distinct is the first integrity rule that a relational table follows. It ensures that the data in the table are always accurate and accessible.