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diff --git a/src/de/lmu/ifi/dbs/elki/database/datastore/WritableRecordStore.java b/src/de/lmu/ifi/dbs/elki/database/datastore/WritableRecordStore.java
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+package de.lmu.ifi.dbs.elki.database.datastore;
+/*
+This file is part of ELKI:
+Environment for Developing KDD-Applications Supported by Index-Structures
+
+Copyright (C) 2011
+Ludwig-Maximilians-Universität München
+Lehr- und Forschungseinheit für Datenbanksysteme
+ELKI Development Team
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import de.lmu.ifi.dbs.elki.database.ids.DBID;
+
+/**
+ * Represents a storage which stores multiple values per object in a record fashion.
+ * 
+ * @author Erich Schubert
+ * 
+ * @apiviz.landmark
+ * 
+ * @apiviz.has de.lmu.ifi.dbs.elki.database.datastore.WritableDataStore oneway - - projectsTo
+ */
+public interface WritableRecordStore extends RecordStore {
+  /**
+   * Get a {@link WritableDataStore} instance for a particular record column.
+   * 
+   * @param <T> Data type
+   * @param col Column number
+   * @param datatype data class
+   * @return writable storage
+   */
+  @Override
+  public <T> WritableDataStore<T> getStorage(int col, Class<? super T> datatype);
+  
+  /**
+   * Remove an object from the store, all columns.
+   * 
+   * @param id object ID to remove
+   * @return success code
+   */
+  public boolean remove(DBID id);
+}