What is the point of the column with 0 scale?

DB version: 11.2

What is my understanding on the precision and scale data number type
NUMBER (p, s)


Example: In NUMBER (5,3)
5 ==> stands for the total number of digits including the numbers after the decimal point
3 ==>. stands for the digits to right of the decimal point.
But for the number type defined with scale 0 how I am able to INSERT numbers with decimal places as shown below? I even managed to INSERT numbers whose total length is crossing the precision 5 below (93939.223)

SQL> drop table t1;

Table dropped.

SQL> create table t1 (empid number (5,0));

Table created.

SQL> insert into t1 values (883.2);

1 row created.

SQL> insert into t1 values (883.22);

1 row created.

SQL> insert into t1 values (883.332);

1 row created.

SQL> insert into t1 values (93939.223);

1 row created.

SQL> commit;

Commit complete.

Decimal values are eliminated.

SQL> drop table t1;
create table t1 (empid number (5,0));
insert into t1 values (883.2);
insert into t1 values (883.22);
insert into t1 values (883.332);
insert into t1 values (93939.223);
drop table t1
           *
ERROR at line 1:
ORA-00942: table or view does not exist

SQL>
Table created.

SQL>
1 row created.

SQL>
1 row created.

SQL>
1 row created.

SQL>
1 row created.

SQL>
SQL> select * from t1;

     EMPID
----------
       883
       883
       883
     93939

SQL> 

Tags: Database

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