Hungarian Notation

Not really Hungarian. This is how I prefix variables, Database Table columns and how I abbreviate common words in my apps (this is an Abr).

• prefixes are application oriented. No language specific datatypes (int32, word etc)
• prefixes are the same cross language. Each programming language used in a project should have the same name for the same variable (eg SQL, C#, Javascript)

Prefixes for variables (& Table Columns)

prefix	Data Type	Example	Usage	Comments
n	numeric	nPerAge	Person's age	Integer values. Can be negative.
s	string	sPerLNm	Person's Last Name
c	currency	cPerSalary	Person's Salary
r	real number	rPerWeight	Person's Weight	used to be “f” but I needed f for functions.
d	date	dPerDob	Person's DateOfBirth
t	time	tMetStart	Meeting's Start Time
o	object	oPerson	Person oPerson=new Person(); (C#) var oPerson=new Person(); (C#)
f	function	fCallBack	var fCallback=function(){};
e	enumeration (string)	ePerMaritalStatus	Person's Marital Status	can have one of prespecified values: see en
en	enumeration list	enMaritalStatus	The structure containing the enumeration values	var enMaritalStatus=[SINGLE,MARRIED,SEPARATED,DIVORCED]
p	Percentage	pVat	Value added Tax (percentage)	pVat = 0.21; (=21%). Some people think p should be reserved for pointers. I think it is reasonable if there is a possibility to use pointers.
b	Boolean	bPerLicensed	bPerLicensed = true; (C#, Javascript) bPerLicensed = 1; (SQL)
nk	primary key	nkPer
nf	foreign key	nfPerOrg	Person's organization
rv	rowversion	rvPer		multi user updates
	Array	Values	var Values=[];	Just use the plural form of a noun.

Form element name prefixes

prefix	Data Type	Example	Usage	Comments
frm	Form	frmPerEdt	Person Edit form
chk	checkbox	chkbPerActive	Person's active flag
cbo	combo	cboeMaritalStatus
btn	button	btnDone
fra	frame-fieldset	fraAdr	Group fields for Person's address
opt	opt	opteMaritalMarried	Marital Status implemented with option button instead of combo
txt	textbox	txtsPerLNm	Person's Last Name
tmr	timer
dlg	dialog	dlgConfirm	Modal Dialog
lbl	label	lblsPerLNm	"Last Name"
rpt	report	rptDailyOrders
img	image	imgLogo

 Abbreviations

Full Text	Abbreviation
Address	Adr
Agent	Agn
Amount	Amn
Category	Cat
City	Cty
Customer	Cus
Date Of Birth	Dob
Father	Fth
FirstName	FNm
Last Name	LNm
Issue	Iss
Major	Mjr
Minor	Mnr
Mother	Mth
Name	Nm
Organization	Org
Person	Per
Product	Prd
Project	Prj
Transaction	Trn