dev/benchmarking/ddl/1_08_table_public_machine.sql

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  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
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    http://www.apache.org/licenses/LICENSE-2.0

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-- MACHINE
CREATE TABLE IF NOT EXISTS public.machine
(
  machine_id SERIAL PRIMARY KEY
  , machine_name citext NOT NULL
  , mac_address macaddr NOT NULL
  , memory_bytes bigint NOT NULL
  , cpu_actual_frequency_Hz bigint NOT NULL
  , machine_other_attributes jsonb
  , cpu_id integer NOT NULL
  , gpu_id integer NOT NULL
  , os_id integer NOT NULL
  , FOREIGN KEY (cpu_id) REFERENCES public.cpu
  , FOREIGN KEY (gpu_id) REFERENCES public.gpu
  , FOREIGN KEY (os_id) REFERENCES public.os
);
COMMENT ON TABLE public.machine
  IS 'Unique identifiers for a machine.';
COMMENT ON COLUMN public.machine.machine_name
  IS 'A machine name of your choice.';
COMMENT ON COLUMN public.machine.mac_address
  IS 'The mac_address of a physical network interface to uniquely '
     'identify a computer. Postgres accepts standard formats, including '
     '''08:00:2b:01:02:03'', ''08-00-2b-01-02-03'', ''08002b:010203''';
COMMENT ON COLUMN public.machine.memory_bytes
  IS 'The output of `sysctl -n hw.memsize`.';
COMMENT ON COLUMN public.machine.cpu_actual_frequency_Hz
  IS 'The output of `sysctl -n hw.cpufrequency`.';
COMMENT ON COLUMN public.machine.machine_other_attributes
  IS 'Additional attributes of interest, as a JSON object. '
     'For example: ''{"hard_disk_type": "solid state"}''::jsonb.';

-- CONSTRAINTS
CREATE UNIQUE INDEX machine_index_on_mac_address
  ON public.machine(mac_address);
COMMENT ON INDEX machine_index_on_mac_address
  IS 'Enforce unique mac address';

CREATE INDEX machine_index_on_cpu_id
  ON public.machine(cpu_id);

CREATE INDEX machine_index_on_gpu_id
  ON public.machine(gpu_id);

CREATE INDEX machine_index_on_os_id
  ON public.machine(os_id);

CREATE INDEX machine_index_on_cpu_gpu_os_id
  ON public.machine(cpu_id, gpu_id, os_id);