The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Snowflake Schema skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Snowflake Schema over the 3 months to 26 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Snowflake Schema
England / London
3 months to
26 Jun 2017
Same period 2016 Same period 2015
Rank - 412 439
Contract jobs citing Snowflake Schema 0 6 3
As % of all contract IT jobs advertised in London - 0.028% 0.013%
As % of the Database & Business Intelligence category - 0.12% 0.054%
Number of daily rates quoted 0 5 0
Median daily rate - £550 -
UK excluding London median daily rate £523 £450 -
% change year-on-year +16.11% -  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Snowflake Schema is in the database and business intelligence skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for database and business intelligence skills.

Contract Database & Business Intelligence Skills
London
Contract job vacancies with a requirement for database and business intelligence skills 4909 4882 5580
As % of all contract IT job vacancies advertised in London 23.65% 22.84% 23.90%
Number of daily rates quoted 3566 3612 3909
Median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.55%  
90% offered a daily rate of more than £365 £338 £300
10% offered a daily rate of more than £625 £625 £600
UK excluding London median daily rate £400 £383 £350
% change year-on-year +4.57% +9.28%  
Number of hourly rates quoted 28 19 51
Median hourly rate £24.66 £35.00 £27.78
Median hourly rate % change year-on-year -29.54% +25.98%  
90% offered a hourly rate of more than £21.50 £16.08 £16.55
10% offered a hourly rate of more than £40.98 £127.00 £55.00
UK excluding London median hourly rate £38.00 £30.50 £26.00
% change year-on-year +24.59% +17.30%  

Snowflake Schema
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Snowflake Schema as a proportion of all contract or permanent IT jobs with a match in the Database & Business Intelligence category.

Job vacancy trend for Snowflake Schema in London

Snowflake Schema
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Snowflake Schema in London.

Contractor daily rate trend for Snowflake Schema in London

For the 6 months to 26 June 2017, IT contractor jobs citing Snowflake Schema also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region with a requirement for Snowflake Schema.

1 5 (100.00%) SQL
1 5 (100.00%) SQL Server
1 5 (100.00%) Data Warehouse
2 4 (80.00%) Migration
2 4 (80.00%) Banking
2 4 (80.00%) Microsoft Analysis Services
2 4 (80.00%) Data Analysis
2 4 (80.00%) SQL Server Integration Services
2 4 (80.00%) SQL Server Analysis Services
2 4 (80.00%) Hadoop
2 4 (80.00%) Analytics
2 4 (80.00%) Analytical Skills
2 4 (80.00%) Big Data
3 3 (60.00%) Apache Pig
3 3 (60.00%) Hortonworks
3 3 (60.00%) Cloudera
3 3 (60.00%) Visualisation
3 3 (60.00%) Apache Hive
3 3 (60.00%) Degree
3 3 (60.00%) QlikView
3 3 (60.00%) SQL Server 2008
3 3 (60.00%) Scala
3 3 (60.00%) Investment Management
3 3 (60.00%) Retail Banking
3 3 (60.00%) Corporate Banking
3 3 (60.00%) Retail
3 3 (60.00%) Risk Management
3 3 (60.00%) Finance
3 3 (60.00%) Stakeholder Management
3 3 (60.00%) Shell Script

Snowflake Schema
Co-occurring IT Skills in London by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 3 (60.00%) Apache Pig
2 1 (20.00%) Apache Spark
Database & Business Intelligence
1 5 (100.00%) Data Warehouse
1 5 (100.00%) SQL Server
2 4 (80.00%) Big Data
2 4 (80.00%) Hadoop
2 4 (80.00%) Microsoft Analysis Services
2 4 (80.00%) SQL Server Analysis Services
2 4 (80.00%) SQL Server Integration Services
3 3 (60.00%) Apache Hive
3 3 (60.00%) QlikView
3 3 (60.00%) SQL Server 2008
4 2 (40.00%) Star Schema
5 1 (20.00%) Cognos Report Studio
5 1 (20.00%) Data Lake
5 1 (20.00%) DataStage
5 1 (20.00%) MySQL
5 1 (20.00%) Oracle Reports
5 1 (20.00%) RDBMS
5 1 (20.00%) Relational Database
5 1 (20.00%) SQL Server Reporting Services
5 1 (20.00%) SQLPlus
General
1 4 (80.00%) Banking
2 3 (60.00%) Corporate Banking
2 3 (60.00%) Finance
2 3 (60.00%) Retail
2 3 (60.00%) Retail Banking
Job Titles
1 4 (80.00%) Developer
2 1 (20.00%) Analyst
2 1 (20.00%) Data Analyst
2 1 (20.00%) Data Warehouse Analyst
2 1 (20.00%) Oracle Analyst
2 1 (20.00%) SQL Developer
2 1 (20.00%) SSAS Developer
2 1 (20.00%) SSIS Developer
Miscellaneous
1 4 (80.00%) Analytical Skills
2 1 (20.00%) Data Structures
Operating Systems
1 3 (60.00%) Windows
Processes & Methodologies
1 4 (80.00%) Analytics
1 4 (80.00%) Data Analysis
1 4 (80.00%) Migration
2 3 (60.00%) Investment Management
2 3 (60.00%) Risk Management
2 3 (60.00%) Stakeholder Management
2 3 (60.00%) Visualisation
3 2 (40.00%) Business Intelligence
3 2 (40.00%) ETL
4 1 (20.00%) Agile Software Development
4 1 (20.00%) Business Development
4 1 (20.00%) Continuous Improvement
4 1 (20.00%) Data Architecture
4 1 (20.00%) Data Cleansing
4 1 (20.00%) Data Management
4 1 (20.00%) Data Migration
4 1 (20.00%) Data Modelling
4 1 (20.00%) Dimensional Modelling
4 1 (20.00%) ETL Development
4 1 (20.00%) RAD
Programming Languages
1 5 (100.00%) SQL
2 3 (60.00%) C#
2 3 (60.00%) Scala
2 3 (60.00%) Shell Script
2 3 (60.00%) T-SQL
3 1 (20.00%) PL/SQL
3 1 (20.00%) Python
Qualifications
1 3 (60.00%) Degree
Vendors
1 3 (60.00%) Cloudera
1 3 (60.00%) Hortonworks
1 3 (60.00%) Microsoft
2 1 (20.00%) Cognos
2 1 (20.00%) Oracle
2 1 (20.00%) Teradata