I\'m in the process of learning SAP BW at work. The SAP clas开发者_运维知识库s material states that in InfoCubes, dimensions are denormalized. I understand the benefit of normalized tables, but don\'t
Background:::: I\'m working with google app engine (GAE) for Java.I\'m struggling to design a data model that plays to big table\'s strengths and weaknesses, these are two previous related posts:
The scenario: Big system (~200 tables). 60,000 users. Complex reports that will require me to do multiple queries for each report and even those will be complex queries with inner queries all over th
I have a wiki system where there is a central table, Article, that has many Revisions in their own table. The Revisions each contain a created_at time and date column.
Based on the information I have provided below, can you give me your opinion on whether its a good idea to denormalize separate tables into one table which holds different types of contracts?.. What a
If I have large articles that need to be stored in a database, each associated with many tables would a NoSQL option help? Should I copy开发者_JAVA百科 the 1000 char articles over multiple \"buckets\"
In Oracle, a table cluster is a group of tables that share common columns and store related data in the same blocks. When tables are clustered, a single data block can contain rows from multiple table
After reading this q开发者_StackOverflowuestion, I\'ve learned that denormalization is not a solution for simplicity. What about this case?
Say I have a \"message\" table with 2 secondary indexes: \"recipient_id\" \"sender_id\" I want to shard the \"message\" table by \"recipient_id\". That way to retrieve all messages sent to a certa
I am designing a database and I would like to normalize the database. In one query I will joining about 30-40 tables. Will this hurt the website performance if it ever becomes extremely popular? This
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