CREATE TABLE `device` (
`device_id` VARCHAR PRIMARY KEY NOT NULL,
`name` text NOT NULL,
`state` text NOT NULL,
`boundary` text NOT NULL,
`segmentation` text,
`state_sysinfo` text,
`elaboration` text,
`created_at` TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP,
`created_by` text DEFAULT 'UNKNOWN',
`updated_at` TIMESTAMPTZ,
`updated_by` text,
`deleted_at` TIMESTAMPTZ,
`deleted_by` text,
`activity_log` text,
CONSTRAINT "state_check_valid_json" CHECK(json_valid("device"."state") OR "device"."state" IS NULL),
CONSTRAINT "segmentation_check_valid_json" CHECK(json_valid("device"."segmentation") OR "device"."segmentation" IS NULL),
CONSTRAINT "state_sysinfo_check_valid_json" CHECK(json_valid("device"."state_sysinfo") OR "device"."state_sysinfo" IS NULL),
CONSTRAINT "elaboration_check_valid_json" CHECK(json_valid("device"."elaboration") OR "device"."elaboration" IS NULL)
)