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I’m Working on My Program that Works With SQL Server.
for Store Data in Database Table, Which of the below approaches is correct?
Store Many Rows Just in One Table (10 Million Record)
Store Fewer Rows in Several Table (500000 Record) (exp: for each Year Create One Table)
Well, it depends!
What are you going to do with the data? If you are querying this data a lot of times it could be a better solution to split the data in (for example) year tables. That way you would have a better performance since you have to query smaller tables.
But on the other side. With a bigger table and with good query’s you might not even see a performance issue. If you only need to store this data it would be better to just use 1 table.
BTW For loading this data into the database you could use BCP (bulkcopy), which is a fast way of inserting a lot of rows.