video_category

4 rows where v_uid = "v_7340z"

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Link v_uid c_uid
v_7340z,c_0951h v_7340z Hi-Def c_0951h
v_7340z,c_0j4bf v_7340z Amateur c_0j4bf
v_7340z,c_9e0rd v_7340z Documentary c_9e0rd
v_7340z,c_qnxxi v_7340z Mature Woman c_qnxxi

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CREATE TABLE video_category (
  v_uid TEXT NOT NULL REFERENCES videos(uid)     ON DELETE CASCADE,
  c_uid TEXT NOT NULL REFERENCES categories(uid) ON DELETE CASCADE,
  PRIMARY KEY (v_uid, c_uid)
);
CREATE INDEX idx_video_category_c ON video_category(c_uid);