multiple-tables

I run the risk of palm-to-forehead here, but I can't quite figure out how to do this with Rails' ActiveRecord sugar. I have a tickets table that has two columns ( submitter_id and assignee_id ) that should each reference a different user from the users table (specifically the id column in the users table). I'd like to be able to do things like ticket.submitter.name and ticket.assignee.email using ActiveRecord's associations. Submitter and Assignee are simply user objects under different associative names. The only thing I've found that comes close to what I am doing is using polymorphic

I have a web application that I am currently working on that uses a MySQL database for the back-end, and I need to know what is better for my situation before I continue any further. Simply put, in this application users will be able to construct their own forms with any number fields (they decide) and right now I have it all stored in a couple tables linked by foreign keys. A friend of mine suggests that to keep things "easy/fast" that I should convert each user's form to a flat table so that querying data from them stays fast (in case of large growth). Should I keep the database normalized

I have the following table: Table1 Table2 CardNo ID Record Date ID Name Dept 1 101 8.00 11/7/2013 101 Danny Green 2 101 13.00 11/7/2013 102 Tanya Red 3 101 15.00 11/7/2013 103 Susan Blue 4 102 11.00 11/7/2013 104 Gordon Blue 5 103 12.00 11/7/2013 6 104 12.00 11/7/2013 7 104 18.00 11/7/2013 8 101 1.00 12/7/2013 9 101 10.00 12/7/2013 10 102 0.00 12/7/2013 11 102 1.00 12/7/2013 12 104 3.00 12/7/2013 13 104 4.00 12/7/2013 i want the result to be like this: Name Dept Record Danny Green 8.00 Tanya Red 11.00 Susan Blue 12.00 Gordon Blue 18.00 where the result is only showing the minimum value of

This is my first post! I hope you can help me out! :-) I used the code provided by the NotePadExample from the developers doc to create a database. Now I want to add a second table to store different data. I can add notes without a problem, and the notes table is created in a similar way as my routes table is. I simply "copied" and edited the given code, but when I try to insert into the new table I get an error saying: "0ERROR/Database(370): android.database.sqlite.SQLiteException: no such table: routes: , while compiling: INSERT INTO routes(line, arrival, duration, start) VALUES(?, ?, ?, ?);

first I want to say I'm new at android, so I'm apologizing if the question is to stupid. I'm writting a Content Provider for a SQLite database with two tables. On table is to show a list at a navigation-drawer activity and the second table is to show in a ListFragment. Everytime when I'm starting the app I'm getting an SQLException. 10-07 15:30:33.856 28280-28813/de.schmidt.android.passworttresor E/SQLiteLog: (1) near "table": syntax error 10-07 15:30:33.871 28280-28813/de.schmidt.android.passworttresor E/AndroidRuntime: FATAL EXCEPTION: ModernAsyncTask #1 10-07 15:30:33.871 28280-28813/de

This should be something encountered by programmers often, but I never tried to get things this way. That is, I'll explain. Say, I need to fetch values from table Zoo like this: @"SELECT z.predator, z.prey FROM Zoo AS z WHERE z.preyType=@carnivore" Now I can get all the values to a List. I need to display the details of that querying in a grid. Now having got z.predator and z.prey values (which are for time sake integers, ie, their respective ids), I need to populate its meaningful values for displaying it to end user (I can't just display their ids). So now I might do something like this:

I have a 3 part problem thats been giving me trouble I know how to get the tables to work if I query 1 table at a time but I can't seem to figure out how I can combine both the tags and more_tags tables to get the same results. The 3 main problems I have are Listed below. PROBLEM 1 I want to be able to group the same tag from both the tags and more_tags tables. PROBLEM 2 I also want to be able to display the tags from each table that are not present in the other table. PROBLEM 3 I also want to count the total amount of times the tag appears in both tags and more_tags tables. MYSQL Tables