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FoxPro 2.6 Programming Foundations Class

Lesson 1: Introduction to Programming Foundations	 1
	Introduction	 2
	Goals for Course	 2
	Starting FoxPro MS-DOS	 3
	Differences between FoxPro 2.5 Windows and DOS Versions	 3
	FoxPro History	 6
	Student Qualifications	 7
Lesson 2: The Data in Database Applications	 9
	Data as a Building Block	 10
	FoxPro Databases	 10
	Record Pointer	 12
	Models for Data	 12
	Flat File Model	 13
	Relational Model 	 13
	Key Fields of Several Kinds	 16
	One-to-Many Relationships	 18
	One-to-One Relationships	 18
	Many-to-Many Relationships	 18
	More Design Questions: Normalization	 19
	Dependency	 20
	Adding Records	 20
	Deleting Records	 20
	Changing Key Fields	 21
	Guidelines for Designing Relationships Among Data	 21
	Reference (Optional)	 23
Lesson 3: Data Access Commands	 25
	Commands used for Opening and Closing Data Files	 26
	Shared vs. Exclusive Use	 28
	What Records do you see?	 30
	Command <FOR> Clause	 32
	Controlling the Order of Processing	 33
	CDX Indexes	 33
	CDX Indexes	 34
	Index with FOR	 35
	The Other Index Type: IDX Indexes	 35
	Index UNIQUE	 36
	REINDEX Issues	 36
	Converting to CDX Index Style	 37
	CLOSE DATABASE	 38
	Record Pointer Manipulation Commands	 38
	Exercise 1: SKIP, GO, EOF(), BOF()	 39
	GO, SKIP Rules	 41
	More Index Functions!	 42
	Using the Master Index to SEEK	 43
	LOCATE FOR <expL>	 46
	SCOPE	 46
Lesson 4: Relating Tables	 49
	SET RELATION TO	 50
	How do You Tell if There are no Matching Records?	 52
	SET SKIP	 53
	Two Additional Warnings	 53
	Exercise 2: Relating Files	 53
	SET FILTER	 56
Lesson 5: Expressions and Variables; Functions	 57
	Debug Window	 58
	FoxPro Help	 58
	FoxPro Syntax Conventions	 59
	More about the FoxPro Help	 61
	FoxPro Keywords	 61
	Expressions	 61
	Evaluation Order	 63
	Exercise 3: Numeric Expression Practice within the Debug Window	 63
	Functions	 64
	Useful Numeric Functions	 64
Lesson 6: Character and Logical Expressions and Functions	 69
	String Functions	 71
	Exercise 4: STRTRAN	 76
	Logical Expressions	 79
	Logical Operators	 79
	Relational Operators	 80
	Logical Functions	 81
	Logical Comparisons with Strings: EXACT	 82
	Exercise 5: Logical Expressions	 84
Lesson 7: Date Expressions and Functions	 87
	Dates	 88
	Dates Functions	 89
Lesson 8: Variables and Expressions	 93
	Variables are created	 95
	Types of Variables	 96
	Length of Character Variables	 96
	Naming of Variables	 97
	The Scope of Variables	 97
	Display of Existing Variables	 97
	Exercise 6: Assignment Statements	 98
	Exercise 7: Additional Variable Functions	 99
Lesson 9: Record Modify Commands	101
	Commands that Modify Fields	102
	REPLACE	102
	SCATTER/GATHER MEMVAR	104
	SCATTER MEMVAR BLANK	105
	(SQL) INSERT INTO ... FROM MEMVAR	105
	Exercise 8: Practice Using Scatter Memvar	106
	APPEND BLANK	108
	Edit Fields or Memory Variables	108
	Recommendations: Edit Memory Variables or Fields	110
Lesson 10: Database Access and Array Actions	113
	SCATTER TO <array>/GATHER FROM <array>	114
		114
	(SQL) INSERT INTO ... FROM <array>	114
	Using Arrays or Cursors for Data	115
	Recommendations	115
	Defining Arrays	117
	DIMENSION/DECLARE/PUBLIC	117
	PUBLIC	118
	SELECT (SQL) TO Array	119
	COPY <scope> TO ARRAY <expC>	119
	Array Functions	120
	Database Structure Functions	122
	A Program to create a Copy of a Table	124
	A Program to create an array with index information	124
Lesson 11: More Database Commands 	127
	More Database Commands	128
	COPY TO ...	131
Lesson 12: Macro Expansion, Name Expressions	133
	Why is This Important?	134
	Macro Substitution	134
	Name Expressions	135
Lesson 13: Using the FoxPro Editor	139
	Opening a Program for Modification	140
	Common Operations with the Editor	140
	Cut/Copy/Paste text: using the Edit Buffer	141
	Marking Text with Clicks	142
	Deleting Text	142
	Saving the editing session	142
	Additional Operations	143
	Additional Hints for Using the Editor	144
	DO: Executing a Simple Program	144
	Exercise 9: Writing a Simple BROWSE Program	145
Lesson 14: Procedures and Functions	147
	Calling a Procedure or Function	148
	When does the Called Procedure/Function Return?	148
	Where does it Return?	149
	Location and Identification of the Called Procedure/Function	150
	PROGRAM(<expN>)	153
	Passing Parameters	153
	PARAMETERS()	155
	The SCOPE of Variables	155
	PUBLIC and RELEASE: Global Variables	156
	The SCOPE of Variables in Procedures and Functions	157
	Reusable and Defensive Programming	158
	Exercise 10: Passing Parameters and Private	159
	Another Place for Procedures & Functions	159
Lesson 15: Flow Control Commands	163
	IF ... ELSE... ENDIF	164
	IIF Immediate IF	165
	DO CASE	165
	Looping commands	167
	SCAN	170
	FOR	171
	Working with Database Records	171
Lesson 16: FoxPro Screen, Window and Data Command	173
	?, ?? Commands	174
	Exercise 11: Hello World Program	175
	@ Commands	176
	Picture Codes	176
	Function Codes	177
	Combining Picture and Function Codes	178
	@ SAY	179
	@ GET	179
	@ EDIT Region	180
	The READ Command	181
	Exercise 12: A Simple Screen Program	182
	READ Syntax	183
Lesson 17: FoxPro Window Command	185
	Window Commands	186
Lesson 18: FoxPro BROWSE Command	191
	BROWSE, EDIT	192
	BROWSE Syntax	192
	Using BROWSE	193
	More about Browse	194
	BROWSE FOR, BROWSE KEY	195
	Calculated Fields in a BROWSE	196
	BROWSE Partition	196
	Controlling Data Entry of Character Fields (Optional)	197
	The Displayed Width of a Field	199
	Displaying Numeric Data	199
	Boundaries on Numeric Data	200
	Working with Logical Type Data	201
	Field Headings	201
	Simple data Validation	201
Lesson 19: The FoxPro 2.5 Report Writer	203
	When You Work with FoxReport	204
	Using the New Printer Driver	205
	Programming with The Printer Driver	206
	PrintJob.. EndPrintJob	207
Afterward	209
Appendix I: FoxPro 2.5 Keywords	211
Appendix II: FoxPro 2.5 File Extensions	217
Appendix III: Reviews of Additional FoxPro Tools	219
Index	221
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