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in this video we discuss how to normalize a database to third normal form [Music] okay so get ready to buckle in because this is one of the trickier concepts in the entire a level specification so were going to step through it slowly bit by bit with a worked example if you dont get it the first time through weve got an extra video after this which will give another example and you can re-watch the videos at a later stage first of all lets start with a basic recap of some of the fundamentals when designing a relational database you need to consider your list of fields and decide which ones could result in repeating data across multiple records all this data needs to be stored but repeating data can take up additional storage space unnecessarily as the database grows the situation will only get worse to prevent this problem from arising we can split the previous table into two tables in the process we create a relationship between them here we say that a single tutor group can conta