What choices are there for document-store databases that allow for relational data to be retrieved? To give a real example, say you have a database to store blog posts. I\'d like to have the data look
I am designing a database for my cookbooks. I have created multiple tables in my design: books, authors, recipes, ingredients and for all these items I want to link media (images or video) to items in
I\'m developing a restaurant application and there will be daily orders for particular guests. because of that daily base of data I thought to use a NoSQL Database e.g. MongoDB to avoid a lot of joins
Can you please help me solve this in Relational Algebra?I\'ve got this DB (Thesis Defense); Teachers(Teacher_ID, Name, Specialty)
I\'m building a php page that will show an specific banner when the user enters his/her phone number in a form field.
People who read C.J.Date\'s Introduction to Database System or books of similar level should not have problems with definition of normalization and denormalization.
I have a kind of theoretical question about databases. To make it more concrete I have thought up an example case.
We have three entities called Product, ProductType, and ProductCategory. Let\'s pretend we have three kinds of ProductType: Book, Music, and Video.
This is not a homework, but new task assign by superior. To create a system for in-house end-users, which auto suggest to different assembly line based on each line\'s capacity. Users need to maintain
How do I rep开发者_Go百科resent the SQL \"not exists\" clause in relational algebra?The SQL NOT EXISTS construct can be represented in relational algebra by the antijoin ▹.
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