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What is the initial step for object-oriented designing
The initial step for object-oriented designing is object modeling. Before we go into deep about object modeling first of all we should know "what is the object modeling"? We can say that Object modeling identifies objects and classes in problem domain and identifies the relationship among objects.
Example : Create a sequence named SEQSS that starts at 105, has a step of 1 and can take maximum value as 2000. CREATE SEQUENCE SEQSS START WITH 105 INCREMENT BY 1 MAX VA
What is Stored Procedure? A stored procedure is a named group of SQL statements that have been previously formed and kept in the server database. Stored procedures accept input
What is relational model feature? A relational model feature is much more data independence than some other database models.
Describe the types of attributes? Types of attributes: An attribute's category determines the type of values that are permitted in the attribute. For instance, the value vers
What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Which database object does not physically exist? A view database object does not physically exist.
What is the function of IO/M signal in the 8085? It is a status signal. It is used to differentiate among memory locations and I/O operations. When this signal is low (IO/M = 0
Availability: A site having the copy of a replicated relation fails, even then the relation may be found in another site. Therefore, the system may carry on to process at least th
Exclusive lock It is asked for by a transaction on a data item that it wants to update. No other transaction can put either a shared lock or an exclusive lock on a dat
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