On Tue, Nov 19, 2002 at 05:59:53PM +0300, Vladimir Prus wrote: > I'm not a database expert, so my knowledge may be just rusty. However, I > never heard about composite types in relational tables, and never seen > anything like that in MySQL. Looking at MySQL docs right now, I indeed see > no mention of composite types. Could you clarify, preferably with concrete > SQL syntax.
SQL is not the only database. Other databases (mine for instance) do support composite types in keys and values. > How this mapping will be defined? Can you give some examples? Especially, > why this mapping can be defined in the same way as for serialization (given > additional "begin_composite/end_composite" hooks? See my mail of a few moments ago; I just solved this issue. > >>Of course, you might have Berkeley DB or something like that, which is > >>on disk map<string, string>. But in this case, Robert's serialization > >>library would work just fine. And BTW, I'd like to have such thing. Well, then, stay tuned for libjfa. :-) = stl on disk. > >I don't know much about Berkley DB, but it looks like it is not relational > >db (record==serialized object ?). It is very limited comparing to fullblown > >relational database. Relational database like SQL are often implemented on top of things like berkley db. I believe MySQL does this for instance. --- Wes
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