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The Internal or Physical Level
The collection of files permanently stored on secondary storage devices is called as the physical database. The internal or physical level is the one nearby to physical storage, and it gives a low-level description of the physical database, and an interface among the operating systems file system and the record structures used in higher levels of abstraction. It is at the level that record types and methods of storage are definite, as well as how stored fields are shown, what physical sequence the stored records are in, and what other physical structures exist.
What is a Name? A user-supplied name is used for identity. This form of identity is used for files in file systems. The user gives every file a name that uniquely identifies it
Your friend owns and operates a wholesale shoe business with annual revenues of $5 million dollars. His wholesale business specializes in supplying and supporting retailers with sh
Consider the subsequent relations along with keys underlined Street (name, location, city) House (number, street_name) Lives (name, house_number) Define the above relations
#what is cursor its uses ? Explain it
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
Explain the disadvantages of using DBMS There could be a few disadvantages of using DBMS. As DBMS requires computers, we have to invest a good amount in acquiring the hardwa
Higher Normal Forms Is there more normal forms beyond BCNF? Yes, though, these normal forms are not based on the concept of functional dependence. More normalisation is needed if
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
You have a friend that runs a motor bike club that holds racing events at various venues on weekends, on a monthly basis. Some venues are private race tracks and some are dirt trac
Explain Relational model and their use in DBMS? Relational Model - The relational model was first introduced through E.F. Codd of the IBM Research in the year of 1970. The mode
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