'View materialization' presentation slideshows

View Materialization

618 views • 23 slides

ICS 421 Spring 2010 Data Warehousing 3

ICS 421 Spring 2010 Data Warehousing 3. Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Implementation Issues. Recall requirements of a data warehouse: Read only (updates via ETL) Ad hoc queries Interactive response times

312 views • 20 slides

Data Warehousing and Decision Support

Data Warehousing and Decision Support. Chapter 23, Part B. Views and Decision Support. OLAP queries are typically aggregate queries. Precomputation is essential for interactive response times.

237 views • 18 slides

Data Warehousing and Decision Support

Data Warehousing and Decision Support. Jianlin Feng School of Software SUN YAT-SEN UNIVERSITY. Introduction. Three Complementary Trends. Warehousing Issues. MOLAP vs. ROLAP. OLAP Queries. OLAP Queries (Contd.). Comparison with SQL Queries. The CUBE Operator. Design Issues.

289 views • 16 slides

Data Warehousing and Decision Support

Data Warehousing and Decision Support. Part Two: - The use of views. Topics. What is a View? Why Views are useful in Data Warehousing? Understand Materialised Views Understand View Maintenance policies. Views and Decision Support. OLAP queries are typically aggregate queries.

244 views • 13 slides