Entity Relationship Diagram – ERD and Cardinality Symbols Simple Explanations

Bydatapandasadmin December 30, 2016

Understading cardinality notation and being able to explain them will go a long way in your database design and implementation. Here we look at a simple explanation of the symbols. (Credit to Data Warehousing for Business Intelligence by University of Colorado System on Coursera)

Symbols in the above diagram and their meanings:

– Oval: means 0

– Perpendicular line: means 1

– Crow’s foot: means many (0 or more); unconstrained

– Some drawing tools support exact cardinalities (numbers)

Placement or position of the cardinality:

– Inside symbol: minimum cardinality

– Outside symbol: maximum cardinality

– How to read the cardinality: You will have to Interpret the far cardinality symbols: near the other entity type.

Hence:

– Course is related to a min of 0 and max of many offerings

– Offering is related to a min of 1 and max of 1 courses (exactly one)

Important Cardinalities and their Classifications:

Classification by common values for minimum and maximum cardinalities

Minimum cardinality based:

– Min cardinality of one: mandatory; makes entity types existent dependent

– Min cardinality of 0: optional; similar to a FK that allows null values

Maximum cardinality based:

– Functional: max cardinality of 1; mathematics based

– 1-M: max cardinalities are 1 and M

– M-N: max cardinalities are many in both directions

– 1-1: max cardinality is one in both directions (not common)

Existence dependency: an entity that cannot exist unless another related entity exists. A mandatory relationship produces an existence dependency.

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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)…

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