1.) the required storage2) reduce mismatch error of the data in the database.3) reduce a Nordic Convention of deleting and editing data, lalai.4) add durability to make each database structure.
1) reduce the space required to store data, 2) reduce errors. The mismatch of data in the database, 3) reduce a normalized index of deleting and editing data, 4) increase the durability of the structure of the database.
1) reduce the space to be used in the data collection 2) to reduce the errors, the mismatch of the data in the database. 3). Reduce อะนอร์ mall light of deleting and editing data 4). Enhance the durability to the structure database.