DC_Data 
Logical Entity Name  DC_Data 
Default Table Name  DC_Data 
Definition  Coefficients of a response 

DC_Data Columns 
ColumnName  Domain  Datatype  NULL  Definition 
key(PK)(FK)    NUMBER(8, 0)  NO  This attribute denotes a unique identifier for a response (digital coefficients) 
row_key(PK)    NUMBER(8, 0)  NO  Row key for responses 
type    VARCHAR2(1)  YES  This attribute denotes whether a value is associated with a numerator/denominator 
coefficient    BINARY_FLOAT  NO  The numerator/denominator coefficient value 
error    BINARY_FLOAT  YES  This attribute denotes the numerator/denominator error 

DC_Data Primary and Unique Keys 
Key Name  Key Type  Keys 
DCD00  PrimaryKey  key, row_key 

DC_Data Foreign Keys 
Parent Relationships: 
Table Name  Type  Cardinality  Constraint Name  VerbPhrase  InversePhrase  Foreign Keys  Is Supertype  Deferrable  Initially Deferred 
DC  Identifying  One To Zero or More  DC_Dat_DC      key  NO  NO  NO 
Child Relationships: 
Table Name  Type  Cardinality  Constraint Name  VerbPhrase  InversePhrase  Foreign Keys  Is Subtype  Deferrable  Initially Deferred 

DC_Data Check Constraints 
Check Constraint Name  CheckConstraint 
DCD01  row_key >= 0 
DCD02  type IN ('P','Z','N','D')