7880 typedef struct FKey FKey;  typedef
9994 struct FKey {  struct
9996   FKey *pNextFrom;  /* Next foreign key in pFrom */  argument
9998   FKey *pNextTo;    /* Next foreign key on table named zTo */  argument
9999   FKey *pPrevTo;    /* Previous foreign key on table named zTo */  argument
10000   int nCol;         /* Number of columns in this key */
10002   u8 isDeferred;    /* True if constraint checking is deferred till COMMIT */
10003   u8 aAction[2];          /* ON DELETE and ON UPDATE actions, respectively */
10004   Trigger *apTrigger[2];  /* Triggers for aAction[] actions */
10005   struct sColMap {  /* Mapping of columns in pFrom to columns in zTo */
10008   } aCol[1];        /* One entry for each of nCol column s */