diff --git a/src/include/commands/sequence.h b/src/include/commands/sequence.h
new file mode 100644
index 00000000000..4e341e9277d
--- /dev/null
+++ b/src/include/commands/sequence.h
@@ -0,0 +1,33 @@
+/*-------------------------------------------------------------------------
+ *
+ * sequence.h--
+ *    prototypes for sequence.c.
+ *
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef SEQUENCE_H
+#define SEQUENCE_H
+
+/* 
+ * Columns of a sequnece relation
+ */
+ 
+#define SEQ_COL_NAME		1
+#define SEQ_COL_LASTVAL		2
+#define SEQ_COL_INCBY		3
+#define SEQ_COL_MAXVALUE	4
+#define SEQ_COL_MINVALUE	5
+#define SEQ_COL_CACHE		6
+#define SEQ_COL_CYCLE		7
+#define SEQ_COL_CALLED		8
+
+#define SEQ_COL_FIRSTCOL	SEQ_COL_NAME
+#define SEQ_COL_LASTCOL		SEQ_COL_CALLED
+
+extern void DefineSequence (CreateSeqStmt *stmt);
+extern int4 nextval (struct varlena *seqname);
+extern int4 currval (struct varlena *seqname);
+extern void CloseSequences (void);
+
+#endif	/* SEQUENCE_H */