EXAMPLE 1: xTable:开发者_Go百科 xTableID, CountryName, PovinceName, CityName OR EXAMPLE 2: Country: CountryID, CountryName
consider a relation R = {P, Q, R, S, T} and the functional dependency F = {P -> Q, {Q, R} -> S, S -> {Q, R}, {S, T} -开发者_开发知识库> phi}. Are there any redundant functional dependencies in F? If s
I was wondering what sort of benefits a nosql option might have either in lieu 开发者_运维知识库of, or in conjunction with a rdbms for a typical MMORPG.In particular, I\'m curious as to how data integ
I think instead of maintaining a single friendRelations table containing a list of relations of all users on my network it would be better to make a separate Relations table for each user on network,
TARGET_RDBMS: MySQL-5.X-InnoDB (\"X\" equals current stable release) BACKGROUND: Building my first database with true referential integrity constraints, in an effort to get feedback, after creating t
I am studying for a test, and this is on the study guide sheet.This is not homework, and will not be graded.
Is there any differ开发者_如何学Pythonent between these two kind of database? If yes, what is the different? Thank you.The question isn\'t really answerable because \"RDBMS\" and \"column-oriented\" r
I am little bit newbie in Hibernate and DBMS and stuck on a problem. I have two table. One is A and second is B. There is Many-to-One relationship between these two tables. Now on removing one record
I am confused about the terms \"DBMS\" and \"RDBMS\". What exactly is the difference between them and more specifical开发者_运维技巧ly, can oracle be called a DBMS or an RDBMS? If it is an example of
i need a database with the following sheme: Product | Discounter | Price ----------------------------------------------开发者_JAVA百科-----------
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