SchemaSpy - Table marinedb.urchin_count_sizes

urchin counts and sizes data

Generated by
SchemaSpy

Legend:

Primary key columns

Columns with indexes

Implied relationships

Excluded column relationships

< n > number of related tables

Column

Type

Size

Nulls

Auto

Default

Children

Parents

Comments

site_code

char

6

urchin_plot_info.site_code	FK_urchin_count_sizes_plot_info R
field_events.site_code	FK_urchin_count_sizes_field_event R

target_assemblage

varchar

20

urchin_plot_info.target_assemblage

FK_urchin_count_sizes_plot_info R

plot_code

varchar

6

urchin_plot_info.plot_code

FK_urchin_count_sizes_plot_info R

species_code

char

6

urchin_group_species.species_code

FK_urchin_count_sizes_group_species R

survey_date

date

10

field_events.survey_date

FK_urchin_count_sizes_field_event R

group_code

varchar

8

urchin_group_species.group_code	FK_urchin_count_sizes_group_species R
field_events.group_code	FK_urchin_count_sizes_field_event R

urchin_disease_code

varchar

8

urchin_disease_codes.urchin_disease_code

FK_urchin_count_sizes_disease_code R

urchin_size_bin

varchar

4

urchin_size_bins.urchin_size_bin

FK_urchin_count_sizes_size_bin R

size_qualifier_code

varchar

6

size_qualifiers.size_qualifier_code

FK_urchin_count_sizes_size_code R

urchin_size_count

int unsigned

10

count_qualifier_code

varchar

6

count_qualifiers.count_qualifier_code

FK_urchin_count_sizes_count_code R

method_code

varchar

6

count_size_methods.method_code

FK_urchin_count_sizes_method_code R

create_date

date

10

modify_date

timestamp

19

current_timestamp()

Table contained 8,400 rows at Thu Nov 06 11:53 PST 2025

Indexes:

Column(s)	Type	Sort	Constraint Name
site_code + target_assemblage + plot_code + species_code + survey_date + group_code + urchin_disease_code + urchin_size_bin	Primary key	Asc/Asc/Asc/Asc/Asc/Asc/Asc/Asc	PRIMARY
count_qualifier_code	Performance	Asc	FK_urchin_count_sizes_count_code
urchin_disease_code	Performance	Asc	FK_urchin_count_sizes_disease_code
site_code + survey_date + group_code	Performance	Asc/Asc/Asc	FK_urchin_count_sizes_field_event
group_code + species_code	Performance	Asc/Asc	FK_urchin_count_sizes_group_species
method_code	Performance	Asc	FK_urchin_count_sizes_method_code
urchin_size_bin	Performance	Asc	FK_urchin_count_sizes_size_bin
size_qualifier_code	Performance	Asc	FK_urchin_count_sizes_size_code