config_channel 
Logical Entity Name  config_channel 
Default Table Name  config_channel 
Definition  Associates NSCL stream codes with programs (used in the sql_chanloader system) 

config_channel Columns 
ColumnName  Domain  Datatype  NULL  Definition 
progid(PK)(FK)    NUMBER(8, 0)  NO  Keys to CONFIG_CHANNEL table 
net(PK)    VARCHAR2(8)  NO  Unique network identifier. This character string is the name of a seismic network  
sta(PK)    VARCHAR2(6)  NO  Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used  
seedchan(PK)    VARCHAR2(3)  NO  SEED channel name. The first character denotes the band code, the second for the instrument code and the third represents the component code  
config    VARCHAR2(64)  YES  Misc note used by config file generation scripts. Originally intended to identify configs within a program group 
lddate    DATE  YES  Load date. Date and time that the record was created or last modified, in Oracle date datatype  
location(PK)    VARCHAR2(2)  NO  Describes the individual sites on an array station, operated by the same network operator  

config_channel Primary and Unique Keys 
Key Name  Key Type  Keys 
config_chankey01  PrimaryKey  progid, net, sta, seedchan, location 

config_channel Foreign Keys 
Parent Relationships: 
Table Name  Type  Cardinality  Constraint Name  VerbPhrase  InversePhrase  Foreign Keys  Is Supertype  Deferrable 
program  Identifying  One To Zero or More        progid  NO  NO 
Child Relationships: 
Table Name  Type  Cardinality  Constraint Name  VerbPhrase  InversePhrase  Foreign Keys  Is Subtype  Deferrable 

config_channel Check Constraints 
Check Constraint Name  CheckConstraint