外键 (Chinese Wikipedia)
Analysis of information sources in references of the Wikipedia article "外键" in Chinese language version.
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amazon.com
- Powell, Gavin. Oracle SQL: Jumpstart with Examples
. Elsevier. 2004: 11. ASIN B008IU3AHY. - Mullins, Craig. DB2 developer's guide. IBM Press. 2012. ASIN B007Y6K9TK.
archive.org
- Elmasri, Ramez. Fundamentals of Database Systems. Addison-Wesley. 2011: 73–74. ISBN 978-0-13-608620-8.
- Sheldon, Robert. Beginning MySQL. John Wiley & Sons. 2005: 119–122. ISBN 0-7645-7950-9.
- MySQL AB. MySQL Administrator's Guide and Language Reference. Sams Publishing. 2006: 40. ISBN 0-672-32870-4.
- Powell, Gavin. Oracle SQL: Jumpstart with Examples. Elsevier. 2004: 11. ASIN B008IU3AHY.
- Mullins, Craig. DB2 developer's guide. IBM Press. 2012. ASIN B007Y6K9TK.
- Sheldon, Robert. Beginning MySQL. John Wiley & Sons. 2005: 156. ISBN 0-7645-7950-9.
- Garcia-Molina, Hector. Database Systems: The Complete Book. Prentice Hall. 2009: 93–95. ISBN 978-0-13-187325-4.
visualcase.com
- Database Basics — Foreign Keys. [2010-03-13]. （原始内容存档于2010-01-10）.
web.archive.org
- Database Basics — Foreign Keys. [2010-03-13]. （原始内容存档于2010-01-10）.