database-design

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How do I organize such database in SQLite?

folks! I need some help with organizing database for application and I have no idea 开发者_JAVA百科how to do it. Suppose following:[详细]

2023-04-11 13:50 分类：问答
Python, SqlAlchemy: Many to many relationship, find those without

Say I have two types of objects, Movies and Tags, related by the ORM in a many to many relationship with an association table indicated by the secondary argument to relationship(), and I want to be ab[详细]

2023-04-11 13:18 分类：问答
Tables versioning (historical tables) and Order tables relationship

If I add a new product in the products table or change the data - it will automatically add into products_history. This is done by trig开发者_运维知识库ger.[详细]

2023-04-11 12:16 分类：问答
MySQL: error on truncate `myTable` when FK has on Delete Cascade enabled

i have a problem with a mysql ERM which is currently driving me crazy. I have a table called usuaris_backoffice used to store backoffice users, then i also have a table called usuaris_backoffice_permi[详细]

2023-04-11 10:14 分类：问答
RavenDB Setup in enterprise setup with fallback plan

I am thinking/evaluating of using RavenDB for the enterprise application our company is planning to build, My knowledge about this database system is not very wide. So I wonder if someone can help me[详细]

2023-04-11 10:00 分类：问答
Creating a customizable, made-to-order Product Catalog in Document Database

My original intent was to ask this question for MongoDB, but I quickly realized this question probably applies to other document oriented databases like CouchDB and others. I\'m having a hard time wra[详细]

2023-04-11 08:43 分类：问答
Any drawbacks to starting an ID column of a table with 0?

user_drug.user_id is constrained by Foreign Key drug.id (which is a Primary Key). Table structure is as follows:[详细]

2023-04-11 07:44 分类：问答
Should OPTIONAL User Settings be Lazy-Initialized into the DB or always created with a new registration?

Simple question:Should OP开发者_StackOverflowTIONAL User Settings be Lazy-Initialized into the DB or always created with a new registration?[详细]

2023-04-11 06:30 分类：问答
Python, SQLAlchemy: Query, filter and return value

Say I run a query with a filter, Session.query(model.Place).join(model.Location).filter(model.Location.great_circle_distance(location) < r)[详细]

2023-04-11 05:33 分类：问答
Which index option should I choose?

I have a SQL table with these columns (id, A, B, C, D, E). I usually query on (A and C) and (B 开发者_如何学运维and C) so I decide to have index on these 3. There are some options for this:[详细]

2023-04-11 05:25 分类：问答