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Backward Recovery (UNDO):In this system the uncommitted changes made by a transaction to a database are undone. Instead the system is reset to the last consistent state of database that is free from any errors.
A collection of a same kind of entities is known as an Entity Set or entity type. Example: For the COLLEGE database defines earlier objects of concern are Students, Faculty,
what is Lossless-join decomposition
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
The JOIN operation is applied on two relations. When we want to choose related tuples from two given relation join is used. The join operation need that both the joined relations m
to develop elrctronic database from manual forms
The figure below depicts the conceptual diagram of a banking system. (a) Describe one example relevant to the system in figure, for each of the 4 types of enterprise appl
what characterizes the levels in RAID technology
Which method is used to key transformation ? A hash method is used to key transformation.
State your technical objectives for mining the data. Data Understanding. Describe the data For each attribute, give its description and data type. For numeric attributes
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
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