Free online database programming course for beginner Delphi developers. Focus on ADO techniques.
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About the Course:
This free online course is perfect for Delphi database beginners as well as for those who want a broad overview of the art of database
programming with Delphi. Developers will learn how to design, develop and test a database application using ADO with Delphi. This course focuses on the most common uses of ADO in a Delphi application: Connecting to a database using TADOConnection, work with Tables and Queries, handle database exception, create reports, etc.
Prerequisites:
Readers should have at a working knowledge of the Windows operating system, as well as some decent level of Delphi Programming knowledge base. New developers should first explore A Beginner's Guide to Delphi Programming
Chapters:
The chapters of this course are being created and updated dynamically on this site. Chapters (for now) include:
CHAPTER 1:
Fundamentals of Database Development (with Delphi)
Delphi as the database programming tool, Data Access with Delphi...just a few words, Building a new MS Access database.
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CHAPTER 2:
Connecting to a database. BDE? ADO?
Connecting to a database. What is the BDE? What is ADO? How to connect to an Access database - the UDL file? Looking forward: the smallest ADO example.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 3:
Pictures inside a database
Displaying images (BMP, JPEG, ...) inside an Access database with ADO and Delphi.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 4:
Data browsing and navigation
Building a data browsing form - linking data components. Navigating through a recordset with a DBNavigator.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 5:
Behind data in datasets
What is the state of data? Iterating through a recordset, bookmarking and reading the data from a database table.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 6:
Data modifications
Learn how to add, insert and delete records from a database table.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 7:
Queries with ADO
Take a look at how you can take advantage of the TADOQuery component to boost your ADO-Delphi productivity.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 8:
Data filtering
Using Filters to narrow the scope of data that is presented to the user.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 9:
Searching for data
Walking through various methods of data seeking and locating while developing ADO based Delphi database applications.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 10:
ADO Cursors
How ADO uses cursors as a storage and access mechanism, and what you should do to choose the best cursor for your Delphi ADO application.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 11:
From Paradox to Access with ADO and Delphi
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Focusing on the TADOCommand components and using the SQL DDL language to help porting your BDE/Paradox data to ADO/Access.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 12:
Master detail relationships
How to use master-detail database relationships, with ADO and Delphi, to deal effectively with the problem of joining two database tables to present information.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 13:
New...Access Database from Delphi
How to create an MS Access database without the MS Access. How to create a table, add an index to an existing table, how to join two tables and set up referential integrity. No MS Access, only Pure Delphi code.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 14:
Charting with Databases
Introducing the TDBChart component by integrating some basic charts into a Delphi ADO based application to quickly make graphs directly for the data in recordsets without requiring any code.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 15:
Lookup!
See how to use lookup fields in Delphi to achieve faster, better and safer data editing. Also, find how to create a new field for a dataset and discuss some of the key lookup properties. Plus, take a look at how to place a combo box inside a DBGrid.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 16:
Compacting an Access database with ADO and Delphi
While working in a database application you change data in a database, the database becomes fragmented and uses more disk space than is necessary.
Periodically, you can compact your database to defragment the database file. This article shows how to use JRO from Delphi in order to compact an Access database from code.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 17:
Database reports with Delphi and ADO
How to use QuickReport set of components to create database reports with Delphi.
See how to produce database output with text, images, charts and memos - quickly and easily.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 18:
Data Modules
How to use the TDataModule class - central location for collecting and
encapsulating DataSet and DataSource objects, their properties, events and code.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 19:
Handling database errors
Introducing error handling techniques in Delphi ADO database application http://delphi.about.com/library/weekly/aa010101a.htm (3 of 6) [24.11.2002 17:11:03]
development. Find out about global exception handling and dataset specific error events. See how to write an error logging procedure.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 20:
From ADO Query to HTML
How to export your data to HTML using Delphi and ADO. This is the first step in publishing your database on the Internet - see how to create a static HTML page from an ADO query.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 21:
Using ADO in Delphi 3 and 4 (before AdoExpress)
How to import Active Data Objects (ADO) type-libraries in Delphi 3 and 4 to create a wrapper around components that encapsulate the functionality of ADO objects, properties and methods.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 22:
Transactions in Delphi ADO database development
How many times have you wanted to insert, delete or update a lot of records collectively wanting that either all of them get executed or if there is an error then none is executed at all? This article will show you how to post or undo a series of changes made to the source data in a single call.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 23:
Deploying Delphi ADO database applications
It is time to make your Delphi ADO database application available for others to run.
Once you have created a Delphi ADO based solution, the final step is to successfully deploy it to the user's computer.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 24:
Delphi ADO/DB programming: Real Problems - Real Solutions
In real world situations, really doing database programming is much more complex than writing about. This chapter points to some great Delphi Programming Forum threads initiated by this Course - discussions that solve problems on the field.
CHAPTER 25:
TOP ADO programming TIPS - DB/25
Collection of frequently asked questions, answers, tips and tricks about ADO programming.
Discuss about questions, comments, problems and solutions related to this chapter!
CHAPTER 26:
Quiz: Delphi ADO Programming - DB/26
What would it look like: Who Wants to be a Delphi ADO Database Programming Guru - the trivia game.
Discuss about questions, comments, problems and solutions related to this chapter!
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Before this course started, there was an online poll asking for you to decide: what type of data access mechanism are you most interested in. After more than 9000 votes it seems that most of you are primarily interested in ADO/MS Access approach. From the fifth version Delphi supports ADO with ADOExpress. AdoExpress components are available with the Enterprise version of Delphi 5 and can be bought by the owners oh the Professional version.
Prior to version 5 Delphi does not support ADO. In order to participate in this course you'll have to get your hands on AdoExpress or some other ADO enabled component set. Some of the third-party ADO data-components can be found here: ADO Delphi VCL components. Most of the techniques that are to be addressed in the following chapters to this course should be easily translated and used with Paradox/dBase or Interbase users.
Those are the poll results ("What approach would you like to learn?"):
. ADO/MSAccess 4625 votes (51%) . Paradox - BDE 167 votes (2%) . dBase - BDE 66 votes (1%) . Interbase 4227 votes (47%)
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