Database Research Overview

Database Systems R&D Center

Dept. of Computer & Information Science & Engineering

College of Engineering

University of Florida

Database Research & Development Center

• University center affiliated with the Department of Computer & Information Science & Engineering – Funded entirely through research grants brought in by

participating faculty

• Members– Faculty: Stanley Su (Director), Joachim Hammer,

Abdelsalam Helal, Herman Lam (ECE Dept.), Markus Schneider, Chris Jermaine

– Researchers & Visitors: Wan Sup Cho, Yihua Huang– Students: ~10 Ph. D., ~30 M.S. and undergraduates

(senior project)– Staff: Secretary and system administrator

DB Center Facilities

• Separate lab space in CSE building• 100 Mbps fiber optics LAN, fiber connections to Dept.

network and campus-wide backbone– 30 Pentium-based NT Workstations

– 3 multi-processor file/compute servers (NT Server)

– 5 SUN Ultra, IBM RS6000 UNIX workstations connected to Dept. network

• Access to IBM RS6000/SP (IBM SUR grant)– 10 nodes, 24 CPUs, 1GB RAM/node, 216GB RAID array

• Wide variety of state-of-the-art software and development tools

Areas of Expertise• Active (rule-based) database management systems

• Cooperative information systems, information workflow, and information brokering

• Information management support for B2B e-commerce

• Database systems for semistructured data and XML

• Data warehousing and decision support

• Data transformation and integration

• Knowledge extraction from legacy systems

• Mobile database systems incl. advanced synchronization protocols

• Spatial, spatio-temporal, and fuzzy databases

• Applied Computational Geometry

Technologies & Prototypes (by Area and Faculty)

Internet-based Knowledge Network (Su, Lam)

• Event specification, filtering and notification

• Event-Trigger-Rule Server for processing triggers and rules

Constraint-based Web-service Broker and Composite Web-service Discovery and Execution (Su, Lam)

• Constraint Satisfaction Processing Server

• Cost-benefit Evaluation Server

• Web Service Flow Engine

Workflow Management (Su, Helal, Lam)

• Dynamic Workflow Management Server

• E-Services and Internet Workflow Server

E1 E2

R1

R2

F1

ETR Server

EventServer

KPM

Publish Events, Rules

E1, E2, R1, R2

User A KnowledgeWeb Server

A

E1

R3ETR Server

Event Server

PublishEvents,Rules

KPM

User B

F2

E2

R4ETR Server

Event Server

PublishEvents,Rules

KPM

User C

Knowledge Web Server B Knowledge Web Server C

Event

Trigger

Rule

Filter

INTERNET

Provider

Subscriber Subscriber

IKnet

Constraint-based Broker, and Composite Service Discovery and

Execution

Internet

Service Provider

Service Provider

Service Provider…

Constraint-based Broker

Query Processor

Service Composer

WSFL Generator

WSF EngineIntelligent Registry

Process Model in DynaFlow

BE

AE

EE

Internet

ISEE Hub

ISEE Hub

Broker Server

ISEE Hub

E-Services

E-Service Adapter

Organization 3Organization 2

Organization 1

Workflow Server Broker Proxy

ETR ServerEvent Server Web Server

E-Services

E-Service Adapter

E-Services

E-Service Adapter

E-Services

E-Service Adapter

Organization 4

Architecture of DynaFlow

Workflow Server Broker Proxy

ETR ServerEvent Server Web Server

Workflow Server Broker Proxy

ETR ServerEvent Server Web Server

Technologies & Prototypes (by Area and Faculty)

Heterogeneous Information Management (Hammer, Schmalz, Colleagues from CoE)

• Need for decision/negotiation support to improve performance and customization across extended business networks

• Scalable Extraction of Enterprise Knowledge from legacy sources (SEEK Project)

• Development of a modular toolkit that allows the rapid, (semi-)automatic instantiation of value-added, firm-specific intermediaries

• http://www.dbcenter.cise.ufl.edu/seek/

Technologies & Prototypes (by Area and Faculty)

Data Warehousing and Decision Support (Hammer, Jermaine)• New data cube model and server for efficient evaluation of

complex decision support queries • Data Cubing with Statistics Trees (CuBiST Project)

• Methods for statistical modeling of DW data • Allow fast, approximate query answering • Query the model, not the data!

• Design of scalable (multi-TB) storage architectures• Developing algorithms and computational theory to

support automatic information extraction from a DW

Technologies & Prototypes (by Area and Faculty)

Database Support for Ubiquitous Computing (Hammer, Helal)• Any time, any where access to data (UbiData Project)• Support automatic hoarding of data from multiple,

heterogeneous sources into a variety of mobile devices• New synchronization protocols for resolving discrepancies

in data sets in light of different connection characteristics (weakly connected, disconnected, …)

• http://www.harris.cise.ufl.edu/projects/ubidata/

Technologies & Prototypes (by Area and Faculty)

Spatial and Spatio-Temporal Database Systems (Schneider)• Spatial and spatio-temporal data modeling, predicates,

query languages, and databases (“moving objects”)• Data structures for spatial  and spatio-temporal objects and

efficient geometric algorithms for spatial and spatio-temporal operations (applied computational geometry)

• Topological relationships• Fuzzy spatial databases• Static and dynamic spatial partitions and graphs (networks)

in database systems

Recent Projects• National industrial information infrastructure protocols (Su,

Lam) – Funded by DARPA

• Extended enterprise consortium for integrated collaborative manufacturing systems (Su, Lam, Hammer) – Funded by NIST

• Advanced technologies to support internet-based scalable e-business enterprises (Su, Lam, Bai (ISE)) – Funded by NSF

• Internet-based bio-knowledge network for supporting genomic research and medicine (Zhou, Su) – Funded by UF

• Theories and methodologies to support operation of flexible production networks (Hammer, Schmalz, colleagues from CoE) – Funded by NSF

Recent Projects (cont’d)• Integration and management of heterogeneous, Internet-based

information sources (Hammer, Fishwick) – Funded by DoD (Army)

• Efficient processing of analytical queries in large data warehouses (Hammer)

• Ubiquitous data access for mobile devices (Helal, Hammer) – Funded by NSF

• Transnational Digital Government (Fortes, Su, et. al) – Funded by NSF

• Genomics Algebra: A New, Integrating Data Model, Language, and Tool for Genomics Data Analysis (Hammer, Schneider, and colleagues from ICBR) – Funding pending