E.f.codd IBM Oracle

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"Legend": "would rather use this life and so you find,..., this life's love story will not change again." ”

Next, E.f.codd on the road, there are few flowers, more thorns.

1983, the author to the United States to study the database, the tutor to encourage us to overcome difficulties and adhere to the academic point of view, said, E.f Codd also suffered from the pressure of Alexander, so that the impact of health, still into the hospital;

But vague, there may be some unspeakable details. As people are reluctant to write more embarrassing things, there are only a few clues to be found online. For example, the following "but book":

　　... however, it is argued that the relational model ... is an idealized model ... not realistic ..., worrying about performance unacceptable;

It was viewed as a serious threat to the normalization of the mesh database (which was in progress) ....　　

The days are difficult, feel time is slow, but E.f.codd insisted, just like "legend" sings "would rather use this life and so you find,..., this life's love story will not change again ...".

Another five spring to autumn, finally usher in a turnaround.

　　

　　Ming to fight for the Dark Bucket 1974 ACM led the organization of an ideological confrontation seminar.

Affirmative: E.f.codd and its supporters;

Opposing: Bachman and its supporters;

Who is Bachman? It was the first time that the hero, the database community (then the only) Turing Award winner. Lightweight for heavyweight, e.f.codd can hold on? Suspense...

Fortunately, e.f.codd strong enough to hold on. This debate has improved the living environment of the relational database as a new thing, and promoted the development of the relational database.

　　outside the floral wall, the end of the mouth, the new technology of the wonderful attracted the fresh it people, although the knowledge has property rights, but in essence, knowledge is human to create shared (of course, under certain regulations).

There are no shortage of discerning, bold people in the world, Larry. Ellison and his team are typical, they identified the prospect of a relational database, established a new small company in 1977, realized the first commercial relational database management system, and later developed into Oracle.

When the flowers are growing outside the wall, when the big money, IBM found themselves a bit of a loss, only to admit that the relational database is indeed good, catching up research and development DB2 and so on.

After the fact that the relational database easy to learn and easy to use, solid foundation, the theory is rich, users do not need to know the details of the storage structure (with today's "Transparent" buzzword, there is structural transparency), finally let the mesh database and hierarchical database (retained in the historical status) exited the historical stage, rdb presenting illegal weapons, Become the mainstream of modern database products.

E.f.codd IBM Oracle