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The Assessment page has a link to download a conceptual model, and a list of data. You are to map this conceptual model, and create the database in Oracle using your own DDL. T
Show, with the help of an example, that relatively high-level transitions result when system or program is stimulated by the outside events. In diagram below, we can observe i
What is substitutability? Any method of a class-say A can equally well be adjured with any object belonging to any subclasses B of A. This characteristic leads to code reuse, a
Related fields in a database are grouped in which form? Related data fields in a database are grouped to form a data record. (A record is a collection of related fields)
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Defining Internal Classes and Operations When we enlarge algorithms, new classes can be added to the store intermediate results. A complex operation could be looked at, as a c
we need example of 2phase locking
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
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