/*
// Licensed to Julian Hyde under one or more contributor license
// agreements. See the NOTICE file distributed with this work for
// additional information regarding copyright ownership.
//
// Julian Hyde licenses this file to you under the Apache License,
// Version 2.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
*/
package org.eigenbase.rel.rules;

/**
 * Defines relational expressions.<p>&nbsp;</p>
 *
 * <h2>Related packages and classes</h2>
 * <ul>
 *    <li>Package<code> <a href="../sql/package-summary.html">org.eigenbase.sql</a></code>
 *        is an object model for SQL expressions</li>
 *    <li>Package<code> <a href="../sql/package-summary.html">org.eigenbase.rex</a></code>
 *        is an object model for relational row expressions</li>
 *    <li>Package<code> <a href="../relopt/package-summary.html">org.eigenbase.relopt</a></code>
 *        provides an
 *        optimizer interface.</li>
 * </ul>
*/

// End package-info.java

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