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1ãå¯å¨erlang mneisa ï¼
erl -mnesia dir Dir
erl -mnesia dir ââd:/mnesiaââ
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mnesia:create_schema(DiscNodes) -> ok | {error,Reason}
mnesia:create_schema([node()]) .
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mnesia:start() -> ok | {error, Reason}
mnesia:start() .
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erl -mnesia dir ââd:/mnesiaââ -s mnesia
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1ã声æ表ç»æï¼
mnesia表ç»æå¯ä»¥ç¨record声æ
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-record(person, {name, age, address, salary, children}).
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2ãå建表ï¼ï¼ææ¡£ï¼
mnesia:create_table(Name, TabDef) -> {atomic, ok} | {aborted, Reason}
mnesia:create_table(person, [{attributes, record_info(fields, person)}]).
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ï¼bagï¼éï¼å æ¡æ°æ®å¯è½æç¸åçé®ï¼ä½æ¯è®°å½çå
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q(Name) ->
F = fun() ->
mnesia:read({person, Name})
end,
mnesia:transaction(F).
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