Download Office of Environmental Health and Safety

Team 7
Allen Chen
Anar Joshi
Jiho Tahk
Minh Tran
Justin Yang
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Client
EER
Relational Schema
Access Database
Queries
Normalization
Next Steps
Office of Environmental Health & Safety
 Office
of Environmental Health and Safety:
provide health, safety, and environmental
guidance and services for the campus
EH&S
Emergency
Response
Environmental
Protection
Workplace
Safety
Radiation
Safety
Hazardous
Materials
Fire Prevention

Responsibilities include:
• Biosafety
• Food permits
• Indoor air quality

Contact: Phil Maynard, Laboratory
Safety Specialist
• Lead for inspection of over 1,200
fumehoods on campus
Gas Cabinet
Vented Sink
Exhausted
Laminar
Flow
(ELF) Hood
 Different
ventilation systems
documented on different databases
 Standard forms for all databases
 Hard to obtain useful information
 Difficult to compile reports from several
separated databases.
 Inaccurate/Nonspecific data due to use of
standard forms
 Created
a prototype database using MS
Access including all crucial elements
 Developed queries to get information
from the database
1.
People (PID, Fname, Lname, Phone#, email)
1a.
Surveyor (PID1, SuperID1b, wage)
1b.
Supervisor (PID1, salary,)
1c.
Other(PID1)
1d.
User (PID1, department, purpose_type)
1e.
PPCS_Technician (PPCSID1, Group)
1f.
2.
3.
4.
Building_Coordinator(BCID1, building,
Rm_num)
Complaint (CID, Type, Location5, Date, Time,
Complainer_PID1)
Inspection_Report (RID, Inspection_ID4,
Insp_Rpt_Date_filed, comments, time_spent,
velocity, mont_velocity)
Inspection_Timeslot (Inspection_ID, Date_filed,
Date_required, Location5, Time, SurveyorPID1a,
violationID7, ventSysID6)
4a.
Emergency_Inspection (Inspection_ID4,
SuperID1b)
4b.
Routine_Inspection (Inspection_ID4)
4c.
5.
6.
Repair_Validation (Inspection4,
PPCS_requestor1, repair_successful)
Location (LID, Building, Room, BCID1f)
Ventilated_System (VSID, LID5, Manufacturer,
Model, Construct, Install_date)
7.
6a.
ELF_Hood (VSID6, Fire_sprinkler,
blower_switch, )
6b.
Gas_Cabinet (VSID6, Gas_type,
concentration, gas_exp_date)
6c.
Vented_Sink (VSID6, Number_sink_holes,
hazards)
Violation (VID, date_recorded, date_fixed,
reportID3)
7a.
Overdue_Violation (VID7, status)
7b.
Airflow_Violation (VID7, PPCSID1e)
7c.
8.
Accuracy_Violation (VID7, PPCSID1e,
monitorID8)
Monitor (MID, VSID7, brand, model, type)
8a.
8b.
9.
10.
11.
12.
13.
14.
Flow_Sensor (MID8, airflow_speed)
Gas_Sensor (MID8, levels, temperature,
pressure)
Super_WorkOrder_To (SuperID1b,
PPCSID1e,Date_issued)
Files_Complaint (SuperID1b, complaintID2)
User_Has_Room_In (userID1d, locationID5)
Send_Report_Copy_To (superID1b, reportID3)
Report_CCed_To (BCID1f, reportID3)
Vent_Violations (ventSysID6, violationID7)
Mean Time to Failure
(and variance)
• Using historical data for each ventilated system, we find the
average and variance of the time to failure
Seasonality of System
Evaluations
• Based on the academic calendar, time periods can be made
to determine “demand” for surveyors
Optimal Number of
Surveyors
• Using seasonality values from previous query, as well as rate
of evaluation, this query calculates optimal number of
surveyors
Systems that Need to be
Checked
• Given inputs for risk preference time duration, and systems
marked for rescheduling, this query outputs ventilated
systems that need to be checked
Best Schedule for Regular
Maintenance Evaluation
• This query lists a ranked order of “jobs,” indicating the order
in which these jobs should be done, with a “job” pertaining to
a building
SELECT t.time_period,
COUNT(t.ventSysID) AS NumSysEvals
FROM Inspection_Timeslot AS t
GROUP BY t.time_period;
SELECT VS.VSID
FROM Ventilated_System AS VS
WHERE EXISTS (
SELECT *
FROM Violation, Vent_Violations
WHERE Vent_Violations.ventSysID = VS.VSID AND
Violation.VID = Vent_Violations.violationID AND
Violation.date_recorded - Date() < next_days)
OR
(mean_time_between_failure^(within_how_many_days_do_you_not_want
_a_failure)* e^(-mean_time_between_failure)/factorial) >
Min_Probability_of_Failure
AND NOT EXISTS
(SELECT *
FROM Inspection_Timeslot AS T
WHERE T.ventSysID=VS.VSID And T.Date_filed>(Date()do_not_count_systems_checked_in_the_past_how_many_days)
);
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Multivalued Attributes to Single valued Attibutes
1. People (PID, Fname, Lname, Phone#, email)
changed to
People (PID, Fname, Lname, Phone#)
People_email(PID, email)
2. Vented_Sink (VSID6, Number_sink_holes, hazards)
changed to
Vented_Sink (VSID6, Number_sink_holes)
Vented_Sink_Hazard(VSID6, hazard)
Violation of 3NF
Accuracy_Violation (VID7, PPCSID1e, monitorID8 )
* Can be accessed using multiple joins
* Readily accessible for user to report
Generate
Reports
and Forms:
Simple yet
Practical
Queries:
• Inspection Data Entering Form
• Newly Added Vent System Form
• Surveyor Inspection Report
• Surveyor Performance Report
• Ventilation System Violations Summary
Report
• Retrieve All Violations
• Prioritize Violations