denormalization

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Why are dimension tables denormalized in an InfoCube?

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[详细]

2023-01-05 16:27 分类：问答
Denormalization in Google App Engine?

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:[详细]

2023-01-05 12:04 分类：问答
A good approach to db planing for reporting service

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[详细]

2023-01-04 02:06 分类：问答
SQL to join to the best matching row

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.[详细]

2023-01-04 02:04 分类：问答
Should I denormalize Loans, Purchases and Sales tables into one table?

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[详细]

2023-01-03 22:46 分类：问答
Denormalization of large text?

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\"[详细]

2023-01-03 12:02 分类：问答
Table clusters in SQLServer

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[详细]

2023-01-01 16:28 分类：问答
Denormalize for Simplicity: Ungood idea?

After reading this q开发者_StackOverflowuestion, I\'ve learned that denormalization is not a solution for simplicity. What about this case?[详细]

2022-12-31 05:04 分类：问答
How do you deal with denormalization / secondary indexes in database sharding?

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[详细]

2022-12-29 01:30 分类：问答
Does normalization really hurt performance in high traffic sites?

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[详细]

2022-12-27 19:48 分类：问答