Teradata Columnar
September 2011
Copyright 2011 Teradata Corporation
1
Teradata Columnar
Teradata is the hybrid row and column
database for the enterprise
• Extreme performance
> Improves data warehouse performance
• Dramatic compression
> Automatic compression of columnar data
• Ease of Use
> Simple to use, automated, dynamic
• Integrated
> Full Integrated Data Warehouse capabilities with columnar
> Use in IDW or for analytical data marts
September 2011
Copyright 2011 Teradata Corporation
2
What is Teradata Columnar?
• Description
> Teradata Columnar is a new physical database
design technique that allows tables to be hybrid
horizontal row and/or vertical column partitions
• Benefits
> Performance
– Improves query performance via column partition
elimination by eliminating need to access all the data in a
row table
> Compression
– Through a new Auto-Compression capability data is
compressed automatically
September 2011
Copyright 2011 Teradata Corporation
3
Teradata Columnar
Cust.
Number
Name
Address
City
State
Zip
For this table …
In row format, each unit of
storage (block) has all of
the values for a row(s)
In column format, each
unit of storage (block) has
values for a single column
September 2011
Copyright 2011 Teradata Corporation
4
Teradata Columnar
Who are all the customers who live in San Diego?
Cust.
Number
City
In row format, database
reads all data to scan City
column spread over all blocks
with other data
Cust.
Number
City
San Diego
San Diego
September 2011
In column format, database
only reads City data and
Cust. Number data because
data in blocks is for one
column
Copyright 2011 Teradata Corporation
5
Teradata Columnar: Extreme Performance
• Improves data warehouse performance
> Faster application response
> Get more work out of the system
> Reduces I/O for better performance
• Column and row partition elimination
• Hybrid row/column
> True columnar storage rather than just compression mechanism
> Use most efficient storage for data and access pattern
• Optimizer chooses best query plan
> Chooses between row and column data when both available with
base table and Join Index
> Takes advantage of all existing Teradata performance features
September 2011
Copyright 2011 Teradata Corporation
6
Teradata Columnar: Dramatic Compression
• Compression
> Store more data
> Reduced I/O for better performance
> Store more data in fast SSD drives
• Multiple compression mechanisms automatically selected
• Columnar auto-compression and existing user specified
compression mechanisms on same data
> MVC, algorithmic, block-level
September 2011
Copyright 2011 Teradata Corporation
7
Teradata Columnar: Ease of Use
• Automated for maximum ease of use and simplicity
> Compression mechanism chosen automatically
> Values for dictionary compression chosen automatically
> Dynamic compression; re-evaluated for each “container”
> Reduced design and analysis time
> Minimal administration effort
• Hybrid Row and Column
> Teradata Columnar automatically determines if column should be
row or column format
• Ease of management
> Reduction of DBA work on aggregates or PI maintenance
> SELECT queries do not change with columnar data
September 2011
Copyright 2011 Teradata Corporation
8
Teradata Columnar: Integrated
• Advanced Tuning
> Row Partitioning, Secondary indexes, Join indexes
• Rich Optimizer
> Rich SQL language, Teradata optimizer
• Mission Critical Availability
> 100% Performance Continuity, Full redundancy, Failover
• Workload Management
> Teradata Active System Management
• Hybrid Storage
> Teradata multi-temperature support (TVS)
• Scalability
> Multidimensional Scalability to 100 Terabytes and Petabytes
• In-Database Analytics
> In database processing
September 2011
Copyright 2011 Teradata Corporation
9
Teradata Columnar Messaging
Teradata is the hybrid row and column
database for the enterprise
• Extreme performance
> Improves data warehouse performance
• Dramatic compression
> Automatic compression of columnar data
• Ease of Use
> Simple to use, automated, dynamic
• Integrated
> Full Integrated Data Warehouse capabilities with columnar
> Use in IDW or for analytical data marts
September 2011
Copyright 2011 Teradata Corporation
10