Hi Yuva,
On Fri, 4 Jan 2008 15:32:44 +0530, "Yuvaraj Athur Raghuvir"
<[EMAIL PROTECTED]> wrote:
>Hello,
>
>Is there any way to estimate the size of the metadata of a SQLite database?
>
>I am trying to do the following:
>1) Set the DB size using MAX_PAGE_COUNT and PAGE_SIZE parameters
>2) I want to do a bulk insert.
>3) However, I want to insert only those many records such that the insert
>succeeds.
>4) I also want to keep a 30% buffer for the data. I would like to start new
>DB instances when that threshold is reached.
>
>To do step 3 successfully, I have to estimate the size of the meta-data.
>Assuming that there is no more data model changes, is there a algorithm or
>heuristic to determine the amount of meta data present in the database?
>
>Thanks and Regards,
>Yuva
The metadata is mostly in the fileheader and the sqlite_master
table. If your schema is more or less static, a run with
sqlite3_analyzer will tell you all you need to know.
Runs of sqlite3_analyzer on a few sample databases could tell
you something about the overhead for your specific data and
filling pattern.
A more reliable approach is to COMMIT your INSERTs frequently
and measure the size of the database file.
HTH
--
( Kees Nuyt
)
c[_]
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