sql server training nyc

to the SSAS server, and then look at the accuracy of the algorithm for the current mining model, the exact rate of the mining model we built in this example is only 16.67% very low, and one important reason is that we are using too little data for data training. This number can be significantly improved after the amount of data trained is increased.Finally, we can call DMX statements on the built mining mo

', row 2nd does not have a primary key or candidate key that matches the list of referenced columns in the foreign key 'for _ number. Message 1750, level 16, status 0, 2nd rows cannot create constraints. See the preceding error message. Because no primary key constraint is set for "Number" in the book1 table, first set */alter table book1add constraint pri _ number primary key clustered (number) -- then set foreign key as follows: alter table booking add constraint for _ No. Foreign key (No.) Re

Are you familiar with the proverb: "When everything is normal, there is always something wrong". That's true, and that's what happened to me. I installed at least more than 10 times visual Studio. NET (vs.net) and SQL Server 2005 under the development platform of multiple machines. I recently replaced a hard drive, reinstalled Windows XP systems, and partition Magic, NoteTab, and other useful tools, and fin

Common SQL Server test questions (1) Question 1 Problem description: create three tables for managing job business training information: S (s #, Sn, SD, SA) s #, Sn, SD, SA stands for student ID, Student name, organization, student age C (C #, CN) C #, CN stands for course number, course name SC (s #, CN respectively #, C #, g) s #, C #, and g respectively repres

Label:Hello everyone, Welcome to the 1th week of SQL Server Performance Tuning training . Before we go into the tedious details of SQL Server performance tuning, I want to build the foundation by explaining how SQL

mining? 1, problem definition 2. Data preparation 3. Training 4. Verification Finally, but as I said before, data mining is not magic. It predicts events not because they can see the future. Instead, it is just a mathematical way to analyze what is going on in historical data and to determine what is most likely to happen if the current trend continues. Then there is always the case that some external factors are causing the current trend to go d

At first I also do not believe, can own according to Http://url.cn/TgrIZT Register, and then through this website to obtain the learning card user name and password, really have 200 yuan vouchers to their own account, so, I bought some courses, since the north wind nets to learn some courses, I feel that I am particularly high on the Commission skills, and may have a relationship with my graduation, in the school every day is theoretical knowledge, not too much time, but since the north wind on

Label:At first I also do not believe, can own according to Http://url.cn/TgrIZT Register, and then through this website to obtain the learning card user name and password, really have 200 yuan vouchers to their own account, so, I bought some courses, since the north wind nets to learn some courses, I feel that I am particularly high on the Commission skills, and may have a relationship with my graduation, in the school every day is theoretical knowledge, not too much time, but since the north wi

that other IP ports are connected, and that security threats from the network are effectively controlled. Refer to the use of IPSec for: http://www.microsoft.com/china/technet/security/ipsecloc.asp The security configuration of some of the SQL Server described above, with the above configuration, gives SQL Server suf

(I said it was a 10-minute entry. In fact, for me, it was really just the ten minutes that the teacher talked about. It wasn't too exaggerated. Then I knew how to write the stored procedure and trigger, of course it's just getting started, but I have been waiting for ten minutes. It would take at least a few days for me to read a book by myself ....) For a long time, the stored procedures and triggers of SQL Serve