I have two tables in a DataSet where the ID field on each is the same. I have a Relation between the two tables. How do I, in C# code, pull the info from Table2 that relates to the info on Table1? I have tried using a new DataRow and assigning it by using GetChildRow, but for some reason I cannot seem to make it work. Also, I understan...
I have two classes, but don't what kind of relation i should use. I have a class Document with a lot properties and no methods. The second class is what i called the DocumentFact (Fact - Factory). This class contains different methods which returns a collection of Document objects. So, the Document class doesn't know anything about the ...
I'm using sql management studio 2005. When i copy all tables to remote database using Import tool, relation dont copy. How to copy tables with relation. ...
Hello, this is my sql problem - there are 3 tables: Names Lists ListHasNames Id Name Id Desc ListsId NamesId =-------- ------------ ---------------- 1 Paul 1 Football 1 1 2 Joe 2 Basketball 1 2 3 Jenny 3 Ping Pong 2 ...
Hallo people, I have two Models, Thread and Post, where one Thread can have many Posts. I want to retrieve the active threads by sorting by 'post_set.createtime'. In the end, I want to get exactly ten Threads that had the most recent activity. Is this possible using no own SQL? Thanks a lot in advance. [Copying the model definitions f...
Hi i want to represent a many to many relation in my wpf appliaction.I want to fill a combobox in my listbox according to a relation.But my parent table does not contain a primary key.So i am not able to add a relation also.My tables are as follows Tests Table(no PK) ............ Id TestName Sample 1 Test1 Blood 1 ...
How would one go about retrieving a dependent/parent object from an entity. $person->getAddress(); This should retrieve the Address object for that person from the database and return it as an object. Is this a good way to do it and how should the code look like if this is ok to do. Doing this would mean that the object itself should...
Hi, I have situation where I dont want to add records to the relation table. For example : I have "TRIPS" entity and it has attribute for "LOCATION_ID", I am filling it when user creates a new TRIP and select a LOCATION from the LOCATIONS entity In "LOCATIONS" entity I am allowing user to create locations and I am assigning a unique ...
EDIT: Stub Entities Definition I have two entity types Subscriber and AddOn Their definition in data model is as below Subscriber(#SubscriberID,Name,AddOnID) AddOn(#AddOnID,Name) AddOnID column in the Subscriber table references the AddOnID column in AddOn table. I'm trying to update the AddOn reference of a specific Subscriber ...
Hi all; I searched a lot but could not find a way to dump table relations like one-to-one, one-to-many vs in PHP. Is there a way to handle this issue in PHP? A result might be: array( 'tableA' => array( 'one-to-one' => array('tableB', 'tableC'), 'one-to-many' => array('tableD'), 'tableB' => arra...
Hi, I have created model which you can see there: http://i.imagehost.org/0836/2009-11-08%5F14%5F37%5F41.png I want to store information about sound categories and some sample sounds for each category. Category has Name (NSString) and SoundsRelation (NSSet of NSData, which represents sounds). Here is the problem: For example I have som...
Can anyone point me to a library or module with a decent integer relation implementation (most likely PSLQ)? My target platform is .NET (C#), but if there's source code in C/C++, Java, whatever, even a semi-comprehensible algorithm, that would help me a lot. All I was able to find on Google was some unreadable Mathematica code. I was ...
I have been trying to create an association relation between two tables, intake and module . Each intake has a one-to-many relationship with the modules. However there is a coursework assigned to each module, and each coursework has a duedate which is unique to each intake. I tried this but it didnt work: intake_modules_table = Tabl...
Hey folks! In my project there is a managed object called "Group". This object itself can contain child group objects. How do I solve this situation in CoreData and in the FetchedResultsController? My first shot: http://i46.tinypic.com/zvonpd.png Thanks, Dan ...
Using SQLAlchemy, given tables such as these: locations_table = Table('locations', metadata, Column('id', Integer, primary_key=True), Column('name', Text), ) players_table = Table('players', metadata, Column('id', Integer, primary_key=True), Column('email', Text), Column('password', ...
I'm using the jquery ui slider for zooming. It's supposed to zoom from 25% to %500, and about half of the range is used for the first %100 of the size. The slider has values from 1 to 100. I need some function that can be used to calculate zooming based on the slider value, e.g. function getZoom(sliderVal) { //return number from 25...
Hi! Is there a way to declare this case so that it works? I hope the code is self-explanatory. class A(Model): many_to_one = models.ForeignKey(B) (...) class B(A): (...) ...
I am quite new to SQLAlchemy, or even database programming, maybe my question is too simple. Now I have two class/table: class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True) name = Column(String(40)) ... class Computer(Base): __tablename__ = 'comps' id = Column(Integer, primary_key=Tr...
Is anyone familiar with ActiveRecord's "has_many :through" relations for models? I'm not really a Rails guy, but that's basically what I'm trying to do. As a contrived example consider Projects, Programmers, and Assignments: from sqlalchemy import create_engine from sqlalchemy.orm import sessionmaker from sqlalchemy import Column, Fo...
I have two Models, Modela and Modelb. Modela can only own one Modelb, but Modelb can be a part of many Modela's. What I have right now is class Modela < ActiveRecord::Base has_one :modelb end class Modelb < ActiveRecord::Base belongs_to :modela, :foreign_key => "modela_id" #might not make sense? end Not too sure about the whole...