--- /dev/null
+/*\r
+\r
+ Derby - Class org.apache.derby.catalog.ReferencedColumns\r
+\r
+ Licensed to the Apache Software Foundation (ASF) under one or more\r
+ contributor license agreements. See the NOTICE file distributed with\r
+ this work for additional information regarding copyright ownership.\r
+ The ASF licenses this file to You under the Apache License, Version 2.0\r
+ (the "License"); you may not use this file except in compliance with\r
+ the License. You may obtain a copy of the License at\r
+\r
+ http://www.apache.org/licenses/LICENSE-2.0\r
+\r
+ Unless required by applicable law or agreed to in writing, software\r
+ distributed under the License is distributed on an "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ See the License for the specific language governing permissions and\r
+ limitations under the License.\r
+\r
+ */\r
+\r
+package org.apache.derby.catalog;\r
+\r
+\r
+/**\r
+ * \r
+ * Provides information about the columns that are referenced by a\r
+ * CHECK CONSTRAINT definition.\r
+ * \r
+ * It is used in the column SYS.SYSCHECKS.REFERENCEDCOLUMNSDESCRIPTOR.\r
+ */\r
+public interface ReferencedColumns\r
+{\r
+ /**\r
+ * Returns an array of 1-based column positions in the table that the\r
+ * check constraint is on. \r
+ *\r
+ * @return An array of ints representing the 1-based column positions\r
+ * of the columns that are referenced in this check constraint.\r
+ */\r
+ public int[] getReferencedColumnPositions();\r
+}\r