CREATE TABLE sngl_ringdown
(
-- Event table for single-interferometer ringdown search.

-- Database which created this entry
      creator_db         INTEGER NOT NULL WITH DEFAULT 1,

-- INFORMATION ABOUT THE PROCESS WHICH GENERATED THIS EVENT
-- Process which generated this event
      process_id         CHAR(13) FOR BIT DATA NOT NULL,
-- Filter identifier (indicates type of filter, plus parameters).  May be null
      filter_id          CHAR(13) FOR BIT DATA,
-- Interferometer
      ifo                CHAR(2) NOT NULL,
-- Channel that was analyzed
      channel            VARCHAR(64),

-- TIME OF THE EVENT
-- The start time of this ringdown event (in GPS seconds and nanoseconds)
      start_time         INTEGER NOT NULL,
      start_time_ns      INTEGER NOT NULL,
-- The time duration of this ringdown event (seconds)
      duration           REAL NOT NULL,

-- PROPERTIES OF THE EVENT
-- Absolute signal amplitude (fractional strain)
      amplitude          REAL NOT NULL,
-- Fundamental ringdown frequency
      frequency          REAL NOT NULL,
-- Quality factor
      q                  REAL NOT NULL,
-- Black hole mass (in solar mass units)
      mass               REAL,
-- Signal to noise ratio
      snr                REAL,
-- Confidence variable
      confidence         REAL,

-- Unique identifier for this event
      event_id           CHAR(13) FOR BIT DATA NOT NULL,
      
-- Insertion time (automatically assigned by the database)
      insertion_time     TIMESTAMP WITH DEFAULT CURRENT TIMESTAMP,

      CONSTRAINT s_ringdown_pk
      PRIMARY KEY (event_id, creator_db),

      CONSTRAINT s_ringdown_fk_pid
      FOREIGN KEY (process_id, creator_db)
          REFERENCES process(process_id, creator_db),

-- Note that filter_id is allowed to be null, in which case no check is made.
      CONSTRAINT s_ringdown_fk_filt
      FOREIGN KEY (filter_id, creator_db)
          REFERENCES filter(filter_id, creator_db)
)
-- The following line is needed for this table to be replicated to other sites
DATA CAPTURE CHANGES
;
-- Create an index based on time
CREATE INDEX s_ringdown_ind_tim ON sngl_ringdown(start_time, snr)
;
-- Create an index based on process_id
CREATE INDEX s_ringdown_ind_pid ON sngl_ringdown(process_id, start_time)
;
-- Create an index based on filter_id
CREATE INDEX s_ringdown_ind_fid ON sngl_ringdown(filter_id, start_time)
;
-- Create an SQL trigger so that if a sngl_ringdown entry is deleted, any
-- associated sngl_datasource, sngl_transdata, and/or sngl_mime entries
-- are deleted too.
-- Must be done this way because there is no foreign-key relationship.
-- Run script sngl_ringdown_tr_del.sql to create delete trigger for 
-- sngl_datasource, sngl_transdata, and sngl_mime records.