Data modeling questions refer to the techniques used to gather and analyze data requirements needed to support data operations in programs and systems.
I've recently been getting into Redis and find it very appealing. I'd like to see how far I can push …
database-design redis data-modelingIf I have a relationship between two tables (both tables have their own primary keys) what should guide my decision …
mysql database database-design data-modelingI'm trying to understand how to use categorical data as features in sklearn.linear_model's LogisticRegression. I understand of course …
python scikit-learn regression data-modeling logistic-regressionIs there any performance difference between varchar(1) and char(1)? Which RDBMS handle these two datatypes and sizes in different ways?
database-design data-modelingI'm on oracle sql developer 4.0.2.15. I used data modeller to generate Entity Relationship Diagram, how to save it as image? …
entity oracle-sqldeveloper data-modeling entity-relationship-modelI would like to know once and for all how to write UML cardinalities, since I very often had to …
oop uml data-modeling cardinalityI have created a Database in DB2 and tables with relationships. I would like to create a ER diagram based …
database database-design db2 data-modeling erdI have a Core Data model which has three entities: A, B, and C. A has a one-to-many relationship with …
cocoa core-data data-modeling cascadeChoosing good primary keys, candidate keys and the foreign keys that use them is a vitally important database design task …
database database-design foreign-keys primary-key data-modelingI am pretty new to Ruby on Rails, and I was wondering if there was a way to edit the …
ruby-on-rails ruby-on-rails-3 data-modeling scaffolding