What Edgar Codd did not solve in RM / T - the second part
Date: Mon, 30 Jul 2018 05:45:37 -0700 (PDT)
Message-ID: <c28097f4-4cff-40ee-aea2-a0c4063c6a37_at_googlegroups.com>
In this post I will write about the history of events. E. Codd never mentions the "history of events". In my paper, for the first time, the history of events is accurately and completely done. This data model is the most powerful. Without the history of events, it is not possible to create "atomic structures".
My model is based on the following two events:
- one event is when a new data is entered into the database;
- another event just says that the existing data is not valid from some point in time.
I have been extensively writing about this data model in this user group so I will not write about it again.
In this my data model, when it comes to data operations, there is only the operation of adding new data. There is no operation that can delete data. There is also no update data operation. So nobody can change data in my data model and in my solution. This is the only data model that can save all the information entered in the database.
This my db solution allows it that we can determine the truth of statements that are in the past tense. My solution also enables it that we can determine truth of statements that are in future tense. This is only possible in my database solution.
We can notice that in the existing theory of logic, the truth is only established on statements that are in the present tense.
Vladimir Odrljin Received on Mon Jul 30 2018 - 14:45:37 CEST