PostgreSQL license 1997

Copyright (c) 1997, PostgreSQL Global Development Group 
2 All rights reserved. 
3 

4 Redistribution and use in source and binary forms, with or without 
5 modification, are permitted provided that the following conditions are met: 
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7 1. Redistributions of source code must retain the above copyright notice, 
8    this list of conditions and the following disclaimer. 
9 2. Redistributions in binary form must reproduce the above copyright notice, 
10    this list of conditions and the following disclaimer in the documentation 
11    and/or other materials provided with the distribution. 
12 

13 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
14 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
15 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
16 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
17 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
18 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
19 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
20 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
21 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
22 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
23 POSSIBILITY OF SUCH DAMAGE.