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2a) A detailed coding scheme recognized by system software for representing organizational data is called a(n):
A) DBMS code.
B) data type.
C) SQL.
D) DB layout.
2b) All of the following are objectives when selecting a data type EXCEPT:
A) represent all possible values.
B) improve data integrity.
C) support all data manipulations.
D) use a lot of storage space.
2c) All of the following are valid datatypes in Oracle 12c EXCEPT:
A) VARCHAR2.
B) BOOLEAN.
C) BLOB.
D) NUMBER.
2d) The smallest unit of application data recognized by system software is a:
A) field.
B) row.
C) data type.
D) column.
2e) An appropriate datatype for one wanting a fixed-length type for last name would include:
A) VARCHAR.
B) CHAR.
C) BLOB.
D) DATE.
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