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After you use the create sequence statement to create a sequence, you can use the NEXTVAL pseudo column to get the next value in the sequence.
<h3 /><h3>How do you create a sequence?</h3>
- You must have the Create any sequence system privilege to create a sequence in another user's schema.
- Specify the schema that will hold the sequence.
- If you leave out schema, Oracle Database will create the sequence in your own schema. Name the sequence that will be created.
- Pseudo-columns allow selection, but you cannot edit, update, or remove their values.
- A pseudo-column is analogous to a function that does not accept any inputs. This section goes over the two pseudo-columns, CURRVAL and NEXTVAL.
- A pseudo column is a "column" that displays a value when a value is selected but is not one of the table's true columns.
- Two examples are SysDate and RowID. It is frequently used in tandem with the DUAL table.
- After you utilize the make sequence statement to make a sequence, you can utilize the NEXTVAL pseudo column to obtain the next value in the sequence.
To learn more about NEXTVAL, refer to:
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Answer:
The object oriented software engineering approach is basically focus on the attention for capture the given structure and conduct the data frameworks in the form of small module which consolidates the information and the procedure.
The principle and aim of the Object Oriented Design (OOD) is that improving the quality of the system analysis and increase its productivity and more usable efficiently.
There are different phases in the object oriented software engineering approach are as follows:
- Firstly, we start analyze and define the particular system
- Then, construct the analysis model based on the above approach of the specific system.
- We verify the correctness of the system by using the testing.
