Apples and Oranges, Part III: A Linux DBMS Comparison - page 2
Evaluating a Wide Range of Factors
PostgreSQL is documented in DocBook SGML. The manual is subdivided into an administrator's guide, programmer's guide, user's guide and a tutorial. Additionally, FAQs and various README files cover some topics. Several areas of the software lack adequate documentation.
MySQL is documented in GNU Texinfo; the manual looks complete.
mSQL comes with a single-document manual (no hypertext), which is available in PostScript and in HTML form. As can be expected from a commercial software product, it covers all the features.
Authentication and General Security
A topic I have not addressed yet, but which needs to be mentioned in this comparison, is access authentication. ANSI SQL offers a very sophisticated and fine-grained mechanism for access control, namely the
PostgreSQL and MySQL, while internally handling access control differently,
understand these standardized statements. An authentication add-on for mSQL's
Web integration package (W3-mSQL) is available, but in its most basic form this
database system seems not to have any access control support built in. Unlike
postmaster, the mSQL database daemon
is supposed to be run as root, which may possibly pose a security risk.
Any larger database needs a security concept as much as it needs a thorough database design. It is impossible to say which of the systems that support authentication (i.e. PostgreSQL or MySQL) is more secure; here, everything depends on the design.In Part IV of the series, Matthias wraps up the look at DBMSes with performance measurements and an overall summary of the tools.
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