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CREATE TABLE metadata (
id SERIAL PRIMARY KEY,
created TIMESTAMP NOT NULL DEFAULT current_timestamp,
created_by BIGINT NOT NULL
);
CREATE INDEX metadata_created on metadata (created);
CREATE INDEX metadata_created_by on metadata (created_by);
CREATE TABLE audit_records (
id SERIAL PRIMARY KEY,
updated TIMESTAMP NOT NULL DEFAULT current_timestamp,
updated_by BIGINT NOT NULL,
metadata_id INTEGER REFERENCES metadata NOT NULL
);
CREATE INDEX audit_updated on audit_records (updated);
CREATE INDEX audit_updated_by on audit_records (updated_by);
CREATE INDEX audit_metadata on audit_records (metadata_id);
CREATE INDEX audit_metadata_updated_by on audit_records (metadata_id, updated_by);
CREATE TABLE images (
id SERIAL PRIMARY KEY,
data bytea NOT NULL,
metadata_id INTEGER REFERENCES metadata UNIQUE NOT NULL
);
CREATE TABLE audio (
id SERIAL PRIMARY KEY,
data bytea NOT NULL,
metadata_id INTEGER REFERENCES metadata UNIQUE NOT NULL
);
CREATE TABLE text_memes (
id SERIAL PRIMARY KEY,
title varchar UNIQUE NOT NULL,
content TEXT NOT NULL,
image_id INTEGER REFERENCES images NULL,
audio_id INTEGER REFERENCES audio NULL,
metadata_id INTEGER REFERENCES metadata UNIQUE NOT NULL,
UNIQUE(content, image_id, audio_id)
);
CREATE TABLE image_memes (
id SERIAL PRIMARY KEY,
title varchar UNIQUE NOT NULL,
image_id INTEGER REFERENCES images NOT NULL,
metadata_id INTEGER REFERENCES metadata UNIQUE NOT NULL,
UNIQUE(title, image_id)
);
CREATE TABLE audio_memes (
id SERIAL PRIMARY KEY,
title varchar UNIQUE NOT NULL,
audio_id INTEGER REFERENCES audio NOT NULL,
metadata_id INTEGER REFERENCES metadata UNIQUE NOT NULL,
UNIQUE(title, audio_id)
);
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