What is the difference between CHAR and VARCHAR data types in Oracle?

What is the difference between CHAR and VARCHAR data types in Oracle?

In Oracle, the primary difference between CHAR and VARCHAR data types lies in how they store and manage data. The focus keyword here is "CHAR vs VARCHAR in Oracle".

CHAR Data Type:

• CHAR is a fixed-length data type in Oracle.
• It allocates a set amount of storage space for each value, padding with spaces if the actual value is shorter than the defined length.
• CHAR is ideal for storing fixed-length data such as phone numbers or identification numbers.
• Uses extra storage space but offers faster access due to fixed lengths.

VARCHAR Data Type:

• VARCHAR is a variable-length data type in Oracle.
• It allocates storage space based on the actual length of the value being stored, saving space compared to CHAR.
• VARCHAR is suitable for storing variable-length data like names or addresses.
• May result in slower access compared to CHAR due to variable lengths.

When choosing between CHAR and VARCHAR in Oracle, consider the nature of your data and the trade-offs between fixed-length storage (CHAR) and variable-length storage (VARCHAR).