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.

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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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