coda

Logical Entity Name | coda
Default Table Name | coda
Definition | Summary information on a coda

coda Attributes

Attribute/Logical Rolename | Domain | Datatype | NULL | Definition
coid |  | NUMERIC(15, 0) | NO | Coda identification. Each coda is assigned a unique positive integer which identifies it in the database
commid |  | NUMERIC(15, 0) | YES | Comment identification. This is a key used to point to free-form comments entered in the Remark relation. These comments store additional information about a tuple in another relation. Within the Remark relation, there may be many tuples with the same commid and different lineno, but the same commid will appear in only one other tuple among the rest of the relations in the database
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) | YES | Unique network identifier. This character string is the name of a seismic network
auth |  | VARCHAR(15) | NO | The auth field specifies the source of the information. This may be a network identifier (FDSN or otherwise), or any other string indicating the source of the information in the record
subsource |  | VARCHAR(8) | YES | A second identifier to specify the system or process that derived the data. e.g., the origin's AUTH is CI, but the subsource (the solution) was computed by JIGGLE
channel |  | VARCHAR(8) | YES | Channel name
channelsrc |  | VARCHAR(8) | YES | Domain for channel. This specifies what naming convention is used for the channel name (i.e. SEED, USGS, etc.)
seedchan |  | VARCHAR(3) | YES | 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) | YES | Describes the individual sites on an array station, operated by the same network operator
codatype |  | VARCHAR(3) | YES | Coda type
afix |  | NUMERIC(7, 4) | YES | Nominal coda amplitude
afree |  | NUMERIC(7, 4) | YES | Free amplitude
qfix |  | NUMERIC(7, 4) | YES | Fixed coda decay constant
qfree |  | NUMERIC(7, 4) | YES | Free decay
tau |  | NUMERIC(7, 4) | YES | Coda duration (F-P time)
nsample |  | NUMERIC(6, 0) | YES | Number of coda sample windows
rms |  | NUMERIC(5, 3) | YES | Square root of the sum of the squares of the coda residuals, divided by the number of observations
durtype |  | VARCHAR(3) | YES | Duration type
iphase |  | VARCHAR(8) | YES | Reported phase. This eight-character field holds the name initially given to a seismic phase. Standard seismological labels for the types of signals (or phases) are used (e.g., P, PKP, PcP, pP). Both upper and lower case letters are available and should be used when appropriate, for example, pP or PcP. (CNSS Table 15: P -> P-wave S -> S-wave)
eramp |  | NUMERIC(5, 3) | YES | Uncertainty in amplitude measurement
units |  | VARCHAR(4) | NO | Units of amplitude
time1 |  | NUMERIC(10, 0) | YES | Time for pairs
amp1 |  | NUMERIC(10, 0) | YES | Amplitude for pairs
time2 |  | NUMERIC(10, 0) | YES | Time for pairs
amp2 |  | NUMERIC(10, 0) | YES | Amplitude for pairs
time3 |  | NUMERIC(10, 0) | YES | Time for pairs
amp3 |  | NUMERIC(10, 0) | YES | Amplitude for pairs
time4 |  | NUMERIC(10, 0) | YES | Time for pairs
amp4 |  | NUMERIC(10, 0) | YES | Amplitude for pairs
time5 |  | NUMERIC(10, 0) | YES | Time for pairs
amp5 |  | NUMERIC(10, 0) | YES | Amplitude for pairs
time6 |  | NUMERIC(10, 0) | YES | Time for pairs
amp6 |  | NUMERIC(10, 0) | YES | Amplitude for pairs
quality |  | NUMERIC(3, 2) | YES | This attribute denotes the quality of an origin, an arrival, or a mechanism. 1.0 = good, 0.0 = bad. Hypoinverse station archive card column 83: 0, 5 --> 1.00 1, 6 --> 0.75 2, 7 --> 0.50 3, 8 --> 0.25
datetime |  | NUMERIC(25, 10) | NO | The UTC epoch "start time" from which the relative seconds time values stored in the time1 ... time6 columns are measured
algorithm |  | VARCHAR(15) | YES | Algorithm used. This is a brief textual description of the algorithm used to derive coda data
winsize |  | NUMERIC(7, 4) | YES | Window over which waveform absolute amplitudes averaged
rflag |  | VARCHAR(2) | YES | This flag describes whether an observation was generated automatically, by a human, or has been finalized
lddate |  | DATE | YES | Load date. Date and time that the record was created, in Oracle date datatype

coda Keys

Key Name | Key Type | Keys
codakey01 | PrimaryKey | coid

coda Relationships

Parent Relationships:

Entity Name | Type | Cardinality | Business Name | VerbPhrase | InversePhrase | Foreign Keys | Is Supertype
remark | Non-Specific |  |  |  |  |  | NO

Child Relationships:

Entity Name | Type | Cardinality | Business Name | VerbPhrase | InversePhrase | Foreign Keys | Is Subtype
assoccoo | Identifying | One To Zero or More |  |  |  |  | NO
assoccom | Identifying | One To Zero or More |  |  |  |  | NO

coda Check Constraints

Check Constraint Name | CheckConstraint
coda01 | afix >= 0.0
coda03 | amp1 > 0
coda04 | amp2 > 0
coda05 | amp3 > 0
coda06 | amp4 > 0
coda07 | amp5 > 0
coda08 | amp6 > 0
coda09 | codatype in ('P','S')
coda10 | coid > 0
coda11 | nsample >= 0
coda12 | rms >= 0.0
coda13 | time1 > 0
coda14 | time2 > 0
coda15 | time3 > 0
coda16 | time4 > 0
coda17 | time5 > 0
coda18 | time6 > 0
coda19 | rflag in ('a','h','f','A','H','F')
coda20 | quality >= 0.0 and quality <= 1.0
coda21 | durtype in ('a','d','h')