datamodel Questions
6
Solved
I am seeking clarification on the definitions of the terms Entity, Model, DataModel, and ViewModel within the context of software development. Could someone provide a detailed explanation for...
Laconic asked 5/1, 2012 at 14:20
2
I am building a data model for a social networking site and lost of how to model Users and Accounts.
1) User signsup and creates an Account. So we assign the User a user Id like on most soci...
Olivenite asked 6/9, 2010 at 0:50
5
Solved
I want to fetch value of field named "Gram" from the last record and put its value into a variable, without using any conditions.
First I tried
int value = int.Parse(Entity.TblGold.LastOrDefault(...
9
Solved
I connect my sql database to Power BI. I got sth like 80.000 rows and I have two additional calculated columns that get previous vales. Here is a code Table.AddColumn(#"Added Custom", &qu...
1
Is there a "mind map", UML diagram, graphic, or some solid reference for the different python types and the magic methods they must implement?
I'm using Python 3.8. The data model docs an...
Pachton asked 30/3, 2021 at 15:51
2
Solved
From the Python data model documentation:
object.__get__(self, instance, owner=None)
Called to get the attribute of the owner class (class attribute access) or of an instance of that class (instan...
Tevet asked 6/7, 2017 at 0:6
3
Is there a detailed notational guide for the Relational model diagrams generated by the Oracle Data Modeler?
I'm using Oracle Data Modeler to generate Relational Models for an existing database....
Plagioclase asked 25/5, 2012 at 17:35
8
Do you know a way to organize boolean expressions in a database while allowing infinite nesting of the expressions?
Example:
a = 1 AND (b = 1 OR b = 2)
The expression as a whole shouldn't be st...
Resolved asked 4/11, 2008 at 12:28
4
Solved
I working with mvc 5. I am loading data from Database Using ORM and fill a drop down list from the controller, like this.
ViewBag.Country_id = new SelectList(_db.Countries, "Country_id", "Descript...
Sri asked 6/1, 2017 at 19:7
3
Can you please tell me, which data structure has an InfluxDB und which data model InfluxDB use? Is this key-value model. I read the full documentation and I didn't catch that.
Thank you in advance...
7
newbie to Entity Framework here. Using VS 2010 and SQL Server 2008 express DB.
I was having trouble refreshing an Entity Data Model after adding new tables. So, I followed a suggestion I found her...
Godfather asked 6/1, 2011 at 17:19
1
Solved
As seen in the official documentation, structure of the polygon GeoJSON object is as shown below:
db.someCollection.insert({
type: "Polygon",
coordinates: [
[
[0, 0], [3, 6], [6, 1], ...
Herschelherself asked 24/10, 2017 at 18:14
5
Solved
I'm using Xcode 4.2 and I'm trying to use Core Data. Upon clicking the .xcdatamodeld file I see a strange view instead of the Data Model Editor View.
I have reinstalled Xcode 4.2 and have even c...
3
Solved
I'm investigating the different types of NoSQL database types and I'm trying to wrap my head around the data model of column-family stores, such as Bigtable, HBase and Cassandra.
First model
Some...
2
Solved
I'm currently starting a new project with Angular 2.0 (release Version) and I want to define some global data models/schemas. As I understand it, Angular 2 has no default way of handling pure data ...
Brython asked 11/10, 2016 at 15:49
4
This code
Sheets(1).Activate
Sheets(2).Range("A1").Select
will fail in VBA because you can only use Select on an object which is Active. I understand this is the case.
What element of the Excel...
4
Solved
What is the difference between a domain model and a data model?
Evanevander asked 30/9, 2010 at 22:5
1
Solved
Data Model
class dataImage {
var userId: String
var value: Double
var photo: UIImage?
var croppedPhoto: UIImage?
init(userId:String, value: Double, photo: UIImage?, croppedPhoto: UIImage?){
...
3
Solved
I was just starting to work on an database application when I realized I should implement MVC pattern as the application is quite complex and involves a number of database operations.
In regards to...
Goldfish asked 3/8, 2011 at 5:31
1
Solved
I was able to connect to the powerpivot datamodel with amo:
string ConnString =
"Provider=MSOLAP;Data Source=$Embedded$;
Locale Identifier=1033;Location=" + ThisAddIn.Current.Application.
Acti...
Stepmother asked 15/7, 2014 at 16:31
1
Solved
This article Connecting to PowerPivot with C# is the closest to my question but it seems that it is out of date. I attempted the methods they showed in the answer but the example
ThisWorkbook.Con...
Amby asked 8/7, 2014 at 23:56
1
Solved
I understand that camel case is the usual convention, as per http://forums.laravel.io/viewtopic.php?id=8857
However, Laravel is using created_at and updated_at for timestamp fields.
I'm confused ...
Hagfish asked 28/1, 2014 at 8:46
1
How does ExtendedTableDataModel (in RichFaces library) work after sorting or having the actual data changed? I'm asking for good quality documentation first and foremost, but also your own intellig...
2
Solved
Whenever I build my project, I'm getting the error:
Command /Developer/usr/bin/momc failed with exit code 1
I've read posts here about deleting extraneous Data Model versions as a fix, and nothi...
1
Solved
Let's assume I have two Entities in my Symfony2 bundle, User and Group. Associated by a many-to-many relationship.
┌────────────────┐ ┌────────────────┐ ┌────────────────┐
| USER | | USER_GROUP_...
Chadwick asked 10/8, 2013 at 9:26
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