Liang Wu
*** **** ******, ** ********** *****
E-Mail: ***.*****@*****.*** TEL: 508-***-****
TECHNICAL SKILL
Summary 10+ years Solid Experience in DB
Application Development(Warehouse and OLTP).
Strong PL/SQL, SQL
Skill. Significant Role in Various Phases of Project Life
Cycle.
Language PL/SQL, T-SQL, SQL, Shell script, JavaScript,
Perl, JAVA, C/C++, PHP.
Operation system UNIX, Windows NT/2000/XP.
Database & Tools Oracle (8i-11g), Sybase(10-12), SQL
server(2000,2005), MySQL; Oracle APEX, Oracle Form and
Report, ETL utilities; PL/SQL
Developer, TOAD, Rational Rose.
PROFESSIONAL EXPERIENCE
06/2006-02/2010 Application Architect (DB), ADP Taxware, Corn Product Group-
Wakefield, MA
Designed, developed oracle database
application using PL/SQL, SQL*Loader, SQL*plus scripts,
Oracle Apex and ETL utilities, adapted
technique oracle 10g OAS to upgrade current products,
prepared design document and added new
functions for corn product by developing programs
(procedures, functions, packages,
triggers), creating objects( roles, indexes, sequences,
directories, synonyms) and performance
tuning for SQL and application, provided analysis for
new business case, requirement and
worked as project manager.
. Designed and implemented web based SUT CMS system using
Oracle APEX, PL/SQL in Oracle 11g and backup monthly data
into warehouse DB.
. Supported Customer DB warehouse with ETL scripts, SQL
scripts and program units.
. Developed production adaptor, installer and version
controller with SQL*plus scripts.
. Instrumental in performance tuning of Oracle and SQL
Server applications.
. Created new math model for tax rule and implemented in
PL/SQL SUT engine.
09/2005-05/2006 Project Leader, Jin Yang LLC-Nanjing, China
Successfully designed and implemented database architecture for
Chemical Production Trading
Manage System (CTMS) on oracle 9i DBMS:
. Designed ER model, data integrity and all data objects
such as tables, views, indexes, sequences, synonyms, db
links.
. Designed the software structure including packages,
procedures, functions and triggers. Provided interface
design for Java application.
. Provided initial data load with SQL*loader and
implemented triggers to backup daily
Transaction data into monthly and yearly structure in the
warehouse DB.
. Did the integration testing, performance testing and
system tuning.
06/2000-09/2005 Database Developer, ISO New England IT group --
Holyoke, MA
Developed and maintained several Oracle
warehouse database applications using PL/SQL, shell
script, C, Java, Perl and PHP on UNIX and
windows.
. Key person of MIS warehouse system. Developed PL/SQL
packages for data population and report generation, shell
scripts and PHP programs for job submission, monitor and
files distribution through the web. On-call for system
supporting.
. Build and maintained MIS DB development environment -
initial objects files, meta data file, install file and
scripts to created synonyms and db links.
. Improved job performance by SQL tuning, index design,
advanced PL/SQL techniques and table partitions.
. Developed and tested Mark System and real time Failover
and Backup System.
06/1999-01/2000 Software Developer (intern), Thomson Financial Company--
Boston, MA
Upgraded stock trade system using
T-SQL and Visual C++.
. Developed and tested procedures in Sybase. Build release
packages.
WORKED PROJECTS
Market Information Server System (MIS)
MIS is a warehouse PL/SQL application run on UNIX platform for processing
large size electrical power data. MIS populated data from remote market or
controller database, generated bunch of reports and distributed to register
customers. Developed PL/SQL packages for data population, reports
generation, security checking. Written shell script and Perl to distribute
files, PHP programs were used for job submitting, monitor and log files web
publish. Cursor, PL/SQL Collections, bulk collect and bulk load, DB link
and synonym, crone job were used.
Chemical Production Trading Manage System (CTMS)
CTMS is a multiple session client -server system using JAVA and Oracle DBMS
to manage trading data. In DB side, procedures, functions, packages and
triggers were developed to handle business logic and backup data into
warehouse DB. Many indexes, hints and collection techniques were used to
improve system performance.
SUT Content Management System (CMS)
CMS is an oracle based web application for multiple roles user to do the
file researching, updating, backup, reloading generation, testing,
auditing and monthly releasing concurrently. Used Oracle Apex 3.1 to
implement web page, 11g DBMS to develop DB application programs -
functions, procedures, packages, triggers. SQL* Loader, Modernized view,
external table, oracle scheduler and queue, BLOB transfer, java external
procedure, PSP, CSS and JavaScript were used here.
Sales/Users Tax System (SUT)
SUT is a PL/SQL engine to read inputting transaction file, calculate
taxes, generate tax report and audit reports. An Oracle Form and Report
client side toolkit is used to trigger report generation and customer
settings. This system was maintained by: upgraded toolkit from 6i form
and report to 10g (client-server to web based), created new adapter for
Oracle business suit using SQL*Plus scripts and shell script, created
SQL*Loader control scripts for fixing position and delimited data files,
developed install scripts for patch installing, version controller and
upgrade routine. Design programming model and tax mathematical model for
tax rule changes. Troubleshoot and bug fixing.
EDUCATION
Master, Computer Science
Master, Physics
University of Massachusetts Dartmouth, North Dartmouth, MA
Bachelor, Electrical and Computer Engineering
Southeast University, Nanjing, China