Nextrics Software Interview Questions and Answers

A declare block becomes mandatory when a variable needs to be declared before it can be used.

• A declare block is used in programming languages to define variables and their types.

• It becomes mandatory when a variable needs to be declared before it can be used in the code.

• This ensures that the variable is properly initialized and can be accessed correctly.

• For example, in C programming, a declare block is mandatory at the ...read more

Implicit cursor is automatically created by the Oracle server, while explicit cursor is explicitly declared by the programmer.

• Implicit cursor is used for single-row queries, while explicit cursor is used for multi-row queries.

• Implicit cursor does not need to be explicitly opened, fetched, or closed, while explicit cursor needs to be explicitly opened, fetched, and closed.

• Implicit cursor is suitable for simple queries, ...read more

No, it is not possible to declare a column with a scale larger than the precision.

• The scale of a number data type represents the number of digits to the right of the decimal point.

• The precision of a number data type represents the total number of digits, including both the whole and decimal parts.

• In the example given, the scale (-84) is larger than the precision (10), which is not allowed.

• The scale should always be equ