Station_Filamp_PChannel

Logical Entity Name | Station_Filamp_PChannel
Default Table Name | Station_Filamp_PChannel
Definition | Data associating physical channels

Station_Filamp_PChannel Attributes

Attribute/Logical Rolename | Domain | Datatype | NULL | Definition
sta |  | VARCHAR(6) | NO | Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used
net |  | VARCHAR(8) | NO | Unique network identifier. This character string is the name of a seismic network
filamp_nb |  | NUMERIC(8, 0) | NO | This attribute represents the filter-amplifier number
pchannel_nb |  | NUMERIC(8, 0) | NO | This attribute denotes a physical channel
ondate |  | DATE | NO | This attribute denotes the start date
next_hard_type |  | VARCHAR(1) | NO | This attribute denotes the next hardware type
next_hard_nb |  | NUMERIC(8, 0) | NO | This attribute denotes the next hardware number
next_hard_pchannel |  | NUMERIC(8, 0) | NO | This attribute denotes the next hardware physical channel
offdate |  | DATE | YES | This attribute denotes the end date
lddate |  | DATE | YES | Load date. Date and time that the record was created or last modified, in Oracle date datatype

Station_Filamp_PChannel Keys

Key Name | Key Type | Keys
StFiP00 | PrimaryKey | sta, net, filamp_nb, pchannel_nb, ondate

Station_Filamp_PChannel Relationships

Parent Relationships:

Entity Name | Type | Cardinality | Business Name | VerbPhrase | InversePhrase | Foreign Keys | Is Supertype
Station_Filamp | Identifying | One To Zero or More |  |  |  | sta, net, filamp_nb, ondate | NO

Child Relationships:

Entity Name | Type | Cardinality | Business Name | VerbPhrase | InversePhrase | Foreign Keys | Is Subtype

Station_Filamp_PChannel Check Constraints

Check Constraint Name | CheckConstraint
StFiP01 | filamp_nb >= 1
StFiP02 | next_hard_nb >= 1
StFiP03 | next_hard_pchannel >= 1
StFiP04 | next_hard_type IN ('F','D')
StFiP05 | pchannel_nb >= 1