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what is definition hierarchical data model
what is entity in database system?
Use inheritance as an implementation technique when you are going to use inheritance as an implementation technique, you can achieve same goal in a safer way by making one cla
i need help with creating database system for a library
File Organisation And Its Types Just as arrays, trees, lists and other data structures are used to execute data Organisation in main memory, a number of planning's are used to
Determine the Disadvantages of file based systems Some of the disadvantages of file based systems are like this: Data redundancy and inconsistency: the dissimilar applic
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
Text Processing: Use readLines to read SOU.txt into R. Create a vector called Pres containing the names of the presidents giving each speech. To do this, rst identify the lin
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
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