mecchannel

Logical Entity Name | mecchannel
Default Table Name | mecchannel
Definition | Summary information on channels associated with a mechanism

mecchannel Attributes

Attribute/Logical Rolename | Domain | Datatype | NULL | Definition
mecdataid |  | NUMERIC(15, 0) | NO | Mechanisn data identifier
net |  | VARCHAR(8) | NO | Unique network identifier. This character string is the name of a seismic network
sta |  | VARCHAR(6) | NO | Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used
seedchan |  | VARCHAR(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
location |  | VARCHAR(2) | NO | Describes the individual sites on an array station, operated by the same network operator

mecchannel Keys

Key Name | Key Type | Keys
MecChannel_PK | PrimaryKey | mecdataid, net, sta, seedchan, location

mecchannel Relationships

Parent Relationships:

Entity Name | Type | Cardinality | Business Name | VerbPhrase | InversePhrase | Foreign Keys | Is Supertype
mecdata | Identifying | One To Zero or More |  |  |  | mecdataid | NO

Child Relationships:

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

mecchannel Check Constraints

Check Constraint Name | CheckConstraint
MecD01 | mecdataid > 0