Free Entity Relationship and Relational Schema Diagram Tool

Bydatapandasadmin November 27, 2016February 19, 2017

ERDPLUS

One tool I generally use when working on a projects, mini tasks and exploration is the ERDPLUS tool . It is quite simple and easy to use.

It is a Free tool as well.

Below are some diagrams I generated when i first got in contact with with tool.

ERD DIAGRAMS:

2. A simple HealthCare Organisation Entity Relationship Diagram (ERD)

RELATIONAL SCHEMAS

Associated Generated SQL code from ERDPlus

CREATE TABLE Customer

(

Custno VARCHAR(10) NOT NULL,

custname VARCHAR(255) NOT NULL,

address VARCHAR(255) NOT NULL,

Internal CHAR(1) NOT NULL,

phone INT NOT NULL,

contact VARCHAR(255) NOT NULL,

city VARCHAR(255) NOT NULL,

state CHAR(2) NOT NULL,

zip CHAR(6) NOT NULL,

PRIMARY KEY (Custno)

);

CREATE TABLE Facility

(

facno VARCHAR(20) NOT NULL,

facname VARCHAR(255) NOT NULL,

PRIMARY KEY (facno)

);

CREATE TABLE Location

(

locno VARCHAR(20) NOT NULL,

locname VARCHAR(255) NOT NULL,

facno VARCHAR(20) NOT NULL,

PRIMARY KEY (locno),

FOREIGN KEY (facno) REFERENCES Facility(facno)

);

Associated Generated SQL code from ERDPlus

CREATE TABLE LOCATION

(

LID INT NOT NULL,

LNAME INT NOT NULL,

PRIMARY KEY (LID)

);

CREATE TABLE PROJECT

(

PID INT NOT NULL,

PNAME INT NOT NULL,

LID INT NOT NULL,

PRIMARY KEY (PID),

FOREIGN KEY (LID) REFERENCES LOCATION(LID)

);

CREATE TABLE EMPLOYEE

(

EID INT NOT NULL,

ENAME INT NOT NULL,

PRIMARY KEY (EID)

);

CREATE TABLE works_on

(

NumOfHours INT NOT NULL,

PID INT NOT NULL,

EID INT NOT NULL,

PRIMARY KEY (PID, EID),

FOREIGN KEY (PID) REFERENCES PROJECT(PID),

FOREIGN KEY (EID) REFERENCES EMPLOYEE(EID)

);

Associated Generated SQL code from ERDPlus

CREATE TABLE VENDOR

(

VENDORID INT NOT NULL,

VENDORNAME INT NOT NULL,

PRIMARY KEY (VENDORID)

);

CREATE TABLE PRODUCT

(

PRODUCTID INT NOT NULL,

PRODUCTNAME INT NOT NULL,

PRODUCTPRICE INT NOT NULL,

VENDORID INT NOT NULL,

PRIMARY KEY (PRODUCTID),

FOREIGN KEY (VENDORID) REFERENCES VENDOR(VENDORID)

);

CREATE TABLE SALES_TRANSACTION

(

TID INT NOT NULL,

TDATE INT NOT NULL,

PRIMARY KEY (TID)

);

CREATE TABLE SOLDVIA

(

NoOfItems INT NOT NULL,

PRODUCTID INT NOT NULL,

TID INT NOT NULL,

PRIMARY KEY (PRODUCTID, TID),

FOREIGN KEY (PRODUCTID) REFERENCES PRODUCT(PRODUCTID),

FOREIGN KEY (TID) REFERENCES SALES_TRANSACTION(TID)

);

This tool can really help make your work straightforward and it is good for practicing too.

ER ASSISTANT

A second tool which is also powerful is ER ASSISTANT. This is a downloadable and installable software and once you get your way round it, it is very powerful.

It can check for errors in your ER Diagram and let you know what errors there are so you can fix them.

It is also very handy. Check the tutorial on using ER Assistant here

Below is a screenshot of ER Diagram using ER Assistant

Want more information like this?

Data Warehousing | Oracle

Creating Oracle PL/SQL Tables for Intercollegiate Athletic Database – Data Warehousing

Bydatapandasadmin November 27, 2016November 27, 2016

Creating Oracle tables for Intercollegiate Athletic Database. Part of Assignment one of Data Warehousing for Business Intelligence on Coursera

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--1 CREATE TABLE FACILITY

CREATE TABLE FACILITY(

FACNO VARCHAR(12),

FACNAME VARCHAR(255) NOT NULL,

CONSTRAINT PK_FAC PRIMARY KEY (FACNO)

);

--2.REATE TABLE EMPLOYEE

CREATE TABLE EMPLOYEE(

EMPNO VARCHAR(12),

EMPNAME VARCHAR(255) NOT NULL,

DEPARTMENT VARCHAR(100) NOT NULL,

EMAIL VARCHAR(50) NOT NULL,

PHONE VARCHAR(30) NOT NULL,

CONSTRAINT PK_EMP PRIMARY KEY (EMPNO),

CONSTRAINT CHK_EMP CHECK(LENGTHB(PHONE) BETWEEN 5 AND 30)

);

--3 RESOURCETBL

CREATE TABLE RESOURCETBL(

RESNO VARCHAR(12),

RESNAME VARCHAR(255) NOT NULL,

RATE NUMBER(8,2) NOT NULL,

CONSTRAINT PK_RES PRIMARY KEY (RESNO)

);

ALTER TABLE

CUSTOMER

drop constraint

CHK_CUS_ZIP;

ALTER TABLE CUSTOMER

ADD CONSTRAINT CHK_CUS_ZIP CHECK(LENGTHB(ZIP) <=10)

--4 CUSTOMER

CREATE TABLE CUSTOMER(

CUSTNO VARCHAR(12),

CUSTNAME VARCHAR(255) NOT NULL,

ADDRESS VARCHAR(255) NOT NULL,

INTERNAL CHAR(1) NOT NULL,

CONTACT VARCHAR(255) NOT NULL,

PHONE VARCHAR(30) NOT NULL,

CITY VARCHAR(50) NOT NULL,

STATE CHAR(2) NOT NULL,

ZIP INTEGER NOT NULL,

CONSTRAINT PK_CUS PRIMARY KEY (CUSTNO),

CONSTRAINT CHK_CUS CHECK (LENGTHB(PHONE) BETWEEN 5 AND 30),

CONSTRAINT CHK_CUS_ZIP CHECK(LENGTHB(ZIP) <=10)

);

--5 LOCATION

CREATE TABLE LOCATION(

LOCNO VARCHAR(12),

FACNO VARCHAR(12),

LOCNAME VARCHAR(255) NOT NULL,

CONSTRAINT PK_LOC PRIMARY KEY (LOCNO),

CONSTRAINT FK_LOC FOREIGN KEY (FACNO)

REFERENCES FACILITY

);

-- 6 EVENTREQUEST

CREATE TABLE EVENTREQUEST(

EVENTNO VARCHAR(12),

DATEHELD DATE NOT NULL,

DATEREQ DATE NOT NULL,

CUSTNO VARCHAR(12),

FACNO VARCHAR(12),

DATEAUTH DATE NOT NULL,

STATUS VARCHAR(20) NOT NULL,

ESTCOST NUMBER(8,2) NOT NULL,

ESTAUDIENCE INTEGER NOT NULL,

BUDNO VARCHAR(12),

CONSTRAINT PK_EVR PRIMARY KEY (EVENTNO),

CONSTRAINT FK_EVR_CUS FOREIGN KEY (CUSTNO) REFERENCES CUSTOMER,

CONSTRAINT FK_EVR_FAC FOREIGN KEY (FACNO) REFERENCES FACILITY,

CONSTRAINT CHK_AUD CHECK(ESTAUDIENCE >= 1),

CONSTRAINT CHK_STU CHECK(STATUS IN ('Approved', 'Pending', 'Denied'))

);

/** LET'S ALLOW NULL VALUES IN THE AUTHORISED DATE, AS we might not as yet have an

authorised date**/

ALTER TABLE EVENTREQUEST

MODIFY

(

DATEAUTH NULL

);

--7 EVENTPLAN

CREATE TABLE EVENTPLAN(

PLANNO VARCHAR(12),

EVENTNO VARCHAR(12),

WORKDATE DATE NOT NULL,

NOTES VARCHAR(1000) NOT NULL,

ACTIVITY VARCHAR(500) NOT NULL,

EMPNO VARCHAR(12),

CONSTRAINT PK_EVP PRIMARY KEY (PLANNO),

CONSTRAINT FK_EVP_EVR FOREIGN KEY (EVENTNO) REFERENCES EVENTREQUEST

);

/*ALLOW NULL VALUES IN NOTES COLUMN*/

ALTER TABLE EVENTPLAN

MODIFY

(

NOTES NULL

);

-- 8 EVENTPLANLINE

CREATE TABLE EVENTPLANLINE(

PLANNO VARCHAR(12),

LINENO INTEGER NOT NULL,

TIMESTART DATE NOT NULL,

TIMEEND DATE NOT NULL,

NUMBERFLD INTEGER NOT NULL,

LOCNO VARCHAR(12),

RESNO VARCHAR(12),

CONSTRAINT PK_EVPLL PRIMARY KEY (PLANNO, LINENO),

CONSTRAINT FK_EVPLL_EVP FOREIGN KEY (PLANNO) REFERENCES EVENTPLAN,

CONSTRAINT FK_EVPLL_LOC FOREIGN KEY (LOCNO) REFERENCES LOCATION,

CONSTRAINT FK_EVPLL_RES FOREIGN KEY (RESNO) REFERENCES RESOURCETBL

);

After creating the tables lets insert values

--INSERT RECORDS INTO EVENTPLANLINE

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P100',1, to_date('25-OCT-13 8:00:00','DD-MON-RR HH24:MI:SS'), to_date('25-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'),2,'L100','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P100',2, to_date('25-OCT-13 12:00:00','DD-MON-RR HH24:MI:SS'),to_date('25-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'), 2,'L101','R101');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P100',3, to_date('25-OCT-13 7:00:00','DD-MON-RR HH24:MI:SS'), to_date('25-OCT-13 16:30:00','DD-MON-RR HH24:MI:SS'), 1,'L102','R102');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P100',4, to_date('25-OCT-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('25-OCT-13 22:00:00','DD-MON-RR HH24:MI:SS'),2,'L100','R102');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P101',1, to_date('3-DEC-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('3-DEC-13 20:00:00','DD-MON-RR HH24:MI:SS'),2,'L103','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P101',2, to_date('3-DEC-13 18:30:00','DD-MON-RR HH24:MI:SS'),to_date('3-DEC-13 19:00:00','DD-MON-RR HH24:MI:SS'),4,'L105','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P101',3, to_date('3-DEC-13 19:00:00','DD-MON-RR HH24:MI:SS'),to_date('3-DEC-13 20:00:00','DD-MON-RR HH24:MI:SS'),2,'L103','R103');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P102',1, to_date('5-DEC-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('5-DEC-13 19:00:00','DD-MON-RR HH24:MI:SS'),2,'L103','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P102',2, to_date('5-DEC-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('5-DEC-13 21:00:00','DD-MON-RR HH24:MI:SS'),4,'L105','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P102',3, to_date('5-DEC-13 19:00:00','DD-MON-RR HH24:MI:SS'),to_date('5-DEC-13 22:00:00','DD-MON-RR HH24:MI:SS'),2,'L103','R103');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P103',1, to_date('12-DEC-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('12-DEC-13 21:00:00','DD-MON-RR HH24:MI:SS'),2,'L103','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P103',2, to_date('12-DEC-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('12-DEC-13 21:00:00','DD-MON-RR HH24:MI:SS'),4,'L105','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P103',3, to_date('12-DEC-13 19:00:00','DD-MON-RR HH24:MI:SS'),to_date('12-DEC-13 22:00:00','DD-MON-RR HH24:MI:SS'),2,'L103','R103');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P104',1, to_date('26-OCT-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('26-OCT-13 22:00:00','DD-MON-RR HH24:MI:SS'),4,'L101','R104');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P104',2, to_date('26-OCT-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('26-OCT-13 22:00:00','DD-MON-RR HH24:MI:SS'),4,'L100','R104');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P105',1, to_date('25-OCT-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('25-OCT-13 22:00:00','DD-MON-RR HH24:MI:SS'),4,'L101','R104');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P105',2, to_date('25-OCT-13 18:00:00','DD-MON-RR HH24:MI:SS'),to_date('25-OCT-13 22:00:00','DD-MON-RR HH24:MI:SS'),4,'L100','R104');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P199',1, to_date('10-DEC-13 8:00:00','DD-MON-RR HH24:MI:SS'), to_date('10-DEC-13 12:00:00','DD-MON-RR HH24:MI:SS'),1,'L100','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P349',1, to_date('12-DEC-13 12:00:00','DD-MON-RR HH24:MI:SS'),to_date('12-DEC-13 15:30:00','DD-MON-RR HH24:MI:SS'),1,'L103','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P85',1, to_date('25-OCT-13 9:00:00','DD-MON-RR HH24:MI:SS'), to_date('25-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'),5,'L100','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P85',2, to_date('25-OCT-13 8:00:00','DD-MON-RR HH24:MI:SS'), to_date('25-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'),2,'L102','R101');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P85',3, to_date('25-OCT-13 10:00:00','DD-MON-RR HH24:MI:SS'), to_date('25-OCT-13 15:00:00','DD-MON-RR HH24:MI:SS'),3,'L104','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P95',1, to_date('26-OCT-13 8:00:00','DD-MON-RR HH24:MI:SS'), to_date('26-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'),4,'L100','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P95',2, to_date('26-OCT-13 9:00:00','DD-MON-RR HH24:MI:SS'), to_date('26-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'),4,'L102','R101');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P95',3, to_date('26-OCT-13 10:00:00','DD-MON-RR HH24:MI:SS'), to_date('26-OCT-13 15:00:00','DD-MON-RR HH24:MI:SS'),4,'L106','R100');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P95',4, to_date('26-OCT-13 13:00:00','DD-MON-RR HH24:MI:SS'), to_date('26-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'),2,'L100','R103');

Insert into EVENTPLANLINE (PLANNO,LINENO,TIMESTART,TIMEEND,NUMBERFLD,LOCNO,RESNO) values ('P95',5, to_date('26-OCT-13 13:00:00','DD-MON-RR HH24:MI:SS'), to_date('26-OCT-13 17:00:00','DD-MON-RR HH24:MI:SS'),2,'L101','R104');

-- INSERT RECORDS INTO EVENTPLAN TABLE

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P100','E100','25-OCT-13','Standard operation','Operation','E102');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P101','E104','03-DEC-13','Watch for gate crashers','Operation','E100');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P102','E105','05-DEC-13','Standard operation','Operation','E102');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P103','E106','12-DEC-13','Watch for seat switching','Operation',null);

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P104','E101','26-OCT-13','Standard cleanup','Cleanup','E101');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P105','E100','25-OCT-13','Light cleanup','Cleanup','E101');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P199','E102','10-DEC-13','ABC','Operation','E101');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P299','E101','26-OCT-13',null,'Operation','E101');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P349','E106','12-DEC-13',null,'Setup','E101');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P85','E100','25-OCT-13','Standard operation','Cleanup','E102');

Insert into EVENTPLAN (PLANNO,EVENTNO,WORKDATE,NOTES,ACTIVITY,EMPNO) values ('P95','E101','26-OCT-13','Extra security','Cleanup','E102');

-- INSERT RECORDS INTO EVENTREQUEST

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E100','25-OCT-13','06-JUN-13','C100','F100','08-JUN-13','Approved',5000,80000,'B1000');

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E101','26-OCT-13','28-JUL-13','C100','F100','','Pending',5000,80000,'B1000');

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E103','21-SEP-13','28-JUL-13','C100','F100','01-AUG-13','Approved',5000,80000,'B1000');

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E102','14-SEP-13','28-JUL-13','C100','F100','31-JUL-13','Approved',5000,80000,'B1000');

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E104','03-DEC-13','28-JUL-13','C101','F101','31-JUL-13','Approved',2000,12000,'B1000');

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E105','05-DEC-13','28-JUL-13','C101','F101','01-AUG-13','Approved',2000,10000,'B1000');

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E106','12-DEC-13','28-JUL-13','C101','F101','31-JUL-13','Approved',2000,10000,'B1000');

Insert into EVENTREQUEST (EVENTNO,DATEHELD,DATEREQ,CUSTNO,FACNO,DATEAUTH,STATUS,ESTCOST,ESTAUDIENCE,BUDNO) values ('E107','23-NOV-13','28-JUL-13','C105','F100','31-JUL-13','Denied',10000,5000,null);

-- INSERT RECORDS INTO LOCATION

Insert into LOCATION (LOCNO,FACNO,LOCNAME) values ('L100','F100','Locker room');

Insert into LOCATION (LOCNO,FACNO,LOCNAME) values ('L101','F100','Plaza');

Insert into LOCATION (LOCNO,FACNO,LOCNAME) values ('L102','F100','Vehicle gate');

Insert into LOCATION (LOCNO,FACNO,LOCNAME) values ('L103','F101','Locker room');

Insert into LOCATION (LOCNO,FACNO,LOCNAME) values ('L104','F100','Ticket Booth');

Insert into LOCATION (LOCNO,FACNO,LOCNAME) values ('L105','F101','Gate');

Insert into LOCATION (LOCNO,FACNO,LOCNAME) values ('L106','F100','Pedestrian gate');

-- INSERT RECORDS INTO FACILITY

Insert into FACILITY (FACNO,FACNAME) values ('F100','Football stadium');

Insert into FACILITY (FACNO,FACNAME) values ('F101','Basketball arena');

Insert into FACILITY (FACNO,FACNAME) values ('F102','Baseball field');

Insert into FACILITY (FACNO,FACNAME) values ('F103','Recreation room');

-- INSERT RECORDS into RESOURCETBL

Insert into RESOURCETBL (RESNO,RESNAME,RATE) values ('R100','attendant',10);

Insert into RESOURCETBL (RESNO,RESNAME,RATE) values ('R101','police',15);

Insert into RESOURCETBL (RESNO,RESNAME,RATE) values ('R102','usher',10);

Insert into RESOURCETBL (RESNO,RESNAME,RATE) values ('R103','nurse',20);

Insert into RESOURCETBL (RESNO,RESNAME,RATE) values ('R104','janitor',15);

Insert into RESOURCETBL (RESNO,RESNAME,RATE) values ('R105','food service',10);

-- insert records into CUSTOMER TABLE

Insert into CUSTOMER (CUSTNO,CUSTNAME,ADDRESS,INTERNAL,CONTACT,PHONE,CITY,STATE,ZIP) values ('C100','Football','Box 352200','Y','Mary Manager','6857100','Boulder','CO','80309');

Insert into CUSTOMER (CUSTNO,CUSTNAME,ADDRESS,INTERNAL,CONTACT,PHONE,CITY,STATE,ZIP) values ('C101','Men''s Basketball','Box 352400','Y','Sally Supervisor','5431700','Boulder','CO','80309');

Insert into CUSTOMER (CUSTNO,CUSTNAME,ADDRESS,INTERNAL,CONTACT,PHONE,CITY,STATE,ZIP) values ('C103','Baseball','Box 352020','Y','Bill Baseball','5431234','Boulder','CO','80309');

Insert into CUSTOMER (CUSTNO,CUSTNAME,ADDRESS,INTERNAL,CONTACT,PHONE,CITY,STATE,ZIP) values ('C104','Women''s Softball','Box 351200','Y','Sue Softball','5434321','Boulder','CO','80309');

Insert into CUSTOMER (CUSTNO,CUSTNAME,ADDRESS,INTERNAL,CONTACT,PHONE,CITY,STATE,ZIP) values ('C105','High School Football','123 AnyStreet','N','Coach Bob','4441234','Louisville','CO','80027');

-- insert records into EMPLOYEE TABLE

Insert into EMPLOYEE (EMPNO,EMPNAME,DEPARTMENT,EMAIL,PHONE) values ('E100','Chuck Coordinator','Administration','chuck@colorado.edu','3-1111');

Insert into EMPLOYEE (EMPNO,EMPNAME,DEPARTMENT,EMAIL,PHONE) values ('E101','Mary Manager','Football','mary@colorado.edu','5-1111');

Insert into EMPLOYEE (EMPNO,EMPNAME,DEPARTMENT,EMAIL,PHONE) values ('E102','Sally Supervisor','Planning','sally@colorado.edu','3-2222');

Insert into EMPLOYEE (EMPNO,EMPNAME,DEPARTMENT,EMAIL,PHONE) values ('E103','Alan Administrator','Administration','alan@colorado.edu','3-3333');

In case you want to change a constraint on a field, you can use a syntax examples as the following. ALTER TABLE FACILITY ADD CONSTRAINT UNQ_FAC UNIQUE (FACNAME)…

SQL | Transact-SQL

Great Quick Transact-SQL Server Tutorials – Quick Revision and General Understanding
Bydatapandasadmin August 7, 2016August 7, 2016

I receive a lot of emails about where to get quick and excellent resources for explaining most of the concepts of Transact-SQL (T SQL) and Microsoft SQL Server in general What is Transact-SQL or T SQL. T-SQL (Transact-SQL) is a set of programming extensions from Sybase and Microsoft that add several features to the Structured Query…

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Data Science | Data Science Competitions | Resources | SQL

FREE Mock Data Generating Website for Data Science and other Data Analysis projects
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Sometimes, you need some mock or test data to either test your program or for your analysis or to populate your database. Or sometimes, you need some sample or mock data to illustrate or explain a concept but you do not want to use your companies’ data or your delicate data. There are a…

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SQL | Transact-SQL

Splitting Values in one Column to Multiple Columns using CASE Expression Statement SQL Server
Bydatapandasadmin November 3, 2016November 3, 2016

Sometimes, you would want to split values in a column into separate rows in SQL server. This is a simple guide. Lets check the fields in the table we will be working with.

Default

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select
[orderID]
,[itemType]
,[price]
,[quantity]
from
[Antrak].[dbo].[ClothingSale]

Let’s check the result: We can see that the itemType field has different values wheres as the price and quantity…

Read More Splitting Values in one Column to Multiple Columns using CASE Expression Statement SQL Server

Business Intelligence - BI | SQL

Rank a Place Visited By a Customer- Microsoft SQL Server – T-Transact

Bydatapandasadmin November 9, 2016

This is a short guide to getting ranking or rating from Microsoft Sql Server customers. Ranking is taken by checking how many times a customer has visited a particular country divided by the total number of travels the customer has made within the database

/*make a back up of the recommender rankings table*/

truncate table antrak.dbo.recommender_rankings_copy

insert into antrak.dbo.recommender_rankings_copy

select * from antrak.dbo.recommender_rankings

/*select total number of times a customer has travelled to a specific country*/

select

[First Name]

,Country

, count(*) as [# times visited]

into #travelpercountry

FROM

[Antrak].[dbo].[FlightBookingsMain]

group by

[First Name]

,Country

order by [First Name]

/*total number of times each customer has travelled to all destinations*/

select

[First Name]

, count(*) as [# times visited]

into #totaltravel

FROM

[Antrak].[dbo].[FlightBookingsMain]

group by

[First Name]

----,Country

order by [First Name]

-- lets view by the total bookings

select * from #totaltravel order by [First Name]

-- lets view bookings per country

select * from #travelpercountry order by [First Name]

/*get rating*/

drop table antrak.dbo.recommender_rankings

select

tt.[First Name]

,Country

,cast(round((cast(tpc.[# times visited] as decimal(3,0)) / cast(tt.[# times visited] as decimal(3,0)) * 100), 1) as float) as rating

into antrak.dbo.recommender_rankings

from

#totaltravel as tt

inner join

#travelpercountry as tpc

on tt.[First Name] = tpc.[First Name]

order by [First Name]

select * from antrak.dbo.recommender_rankings

/*lets refresh the temporary tables*/

drop table #totaltravel

drop table #travelpercountry

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