Table Name 

Description 

QOSParameters 

Used to store information relating to requests and 

responses to and from Services that are monitored 

SLAGeneralParameters 

Stores information of the general SLA parameter 

grouping 

SLAServiceMappings 

Stores the service mappings that are defined for each 

service 

SLAServiceMappingParameter 

Stores data on the derived parameters that are to be 

monitored for each service mapping 

SLAReferedObjectsParameter 

Stores parameters that are to be monitored for referred 

requests.   

SLAParameterDesciptor 

Stores the information of how derived parameters are 

calculated 

Table 8: Database Tables and Descriptions 

4.6 Conclusion 

This chapter initially presented a number of architectures that could support QoS monitoring 

for Web delivered Service. The overall design of the client side proxy was then discussed 

including the 

HTTPQoS

 filter that actually analyses HTTP requests and replies and logs 

appropriate performance and availability information to a database. The information 

architecture of the framework was featured next. This included the design of a generic SLA 

for Web delivered Services in XML and a number of DTDs that define other data structures 

to support the framework. Completing the Chapter, the database tables used to store and 

retrieve data were listed and their functions described. 

a

a

a

a