text: -- e_fkey.test
  -- 
  -- execsql {
  --     CREATE TABLE artist(
  --       artistid    INTEGER PRIMARY KEY, 
  --       artistname  TEXT
  --     );
  --     CREATE TABLE track(
  --       trackid     INTEGER, 
  --       trackname   TEXT, 
  --       trackartist INTEGER NOT NULL,
  --       FOREIGN KEY(trackartist) REFERENCES artist(artistid)
  --     );
  -- }
  CREATE TABLE artist(
  artistid    INTEGER PRIMARY KEY, 
  artistname  TEXT
  );
  CREATE TABLE track(
  trackid     INTEGER, 
  trackname   TEXT, 
  trackartist INTEGER NOT NULL,
  FOREIGN KEY(trackartist) REFERENCES artist(artistid)
  );