What is a main data source?class 10 computer question
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I think It is stored in nodes of the server
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ᴀ ᴘʀɪᴍᴀʀʏ ᴅᴀᴛᴀ sᴏᴜʀᴄᴇ ɪs ᴀɴ ᴏʀɪɢɪɴᴀʟ ᴅᴀᴛᴀ sᴏᴜʀᴄᴇ, ᴛʜᴀᴛ ɪs, ᴏɴᴇ ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ ᴅᴀᴛᴀ ᴀʀᴇ ᴄᴏʟʟᴇᴄᴛᴇᴅ ғɪʀsᴛʜᴀɴᴅ ʙʏ ᴛʜᴇ ʀᴇsᴇᴀʀᴄʜᴇʀ ғᴏʀ ᴀ sᴘᴇᴄɪғɪᴄ ʀᴇsᴇᴀʀᴄʜ ᴘᴜʀᴘᴏsᴇ ᴏʀ ᴘʀᴏᴊᴇᴄᴛ. ᴘʀɪᴍᴀʀʏ ᴅᴀᴛᴀ ᴄᴀɴ ʙᴇ ᴄᴏʟʟᴇᴄᴛᴇᴅ ɪɴ ᴀ ɴᴜᴍʙᴇʀ ᴏғ ᴡᴀʏs. ... ɪɴ ᴛʜᴇ ᴄᴏɴᴅᴜᴄᴛ ᴏғ ʀᴇsᴇᴀʀᴄʜ, ʀᴇsᴇᴀʀᴄʜᴇʀs ʀᴇʟʏ ᴏɴ ᴛᴡᴏ ᴋɪɴᴅs ᴏғ ᴅᴀᴛᴀ sᴏᴜʀᴄᴇs—ᴘʀɪᴍᴀʀʏ ᴀɴᴅ sᴇᴄᴏɴᴅᴀʀʏ.ᴛʜᴀᴛ ɪs, ᴏɴᴇ ɪɴ ᴡʜɪᴄʜ ᴛʜᴇ ᴅᴀᴛᴀ ᴀʀᴇ ᴄᴏʟʟᴇᴄᴛᴇᴅ ғɪʀsᴛʜᴀɴᴅ ʙʏ ᴛʜᴇ ʀᴇsᴇᴀʀᴄʜᴇʀ ғᴏʀ ᴀ sᴘᴇᴄɪғɪᴄ ʀᴇsᴇᴀʀᴄʜ ᴘᴜʀᴘᴏsᴇ ᴏʀ ᴘʀᴏᴊᴇᴄᴛ. ᴘʀɪᴍᴀʀʏ ᴅᴀᴛᴀ ᴄᴀɴ ʙᴇ ᴄᴏʟʟᴇᴄᴛᴇᴅ ɪɴ ᴀ ɴᴜᴍʙᴇʀ ᴏғ ᴡᴀʏs. ... ɪɴ ᴛʜᴇ ᴄᴏɴᴅᴜᴄᴛ ᴏғ ʀᴇsᴇᴀʀᴄʜ, ʀᴇsᴇᴀʀᴄʜᴇʀs ʀᴇʟʏ ᴏɴ ᴛᴡᴏ ᴋɪɴᴅs ᴏғ ᴅᴀᴛᴀ sᴏᴜʀᴄᴇs—ᴘʀɪᴍᴀʀʏ ᴀɴᴅ sᴇᴄᴏɴᴅᴀʀʏ.
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