nawerally.blogg.se - Microsoft access database basics

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#MICROSOFT ACCESS DATABASE BASICS SOFTWARE#
#MICROSOFT ACCESS DATABASE BASICS CODE#
#MICROSOFT ACCESS DATABASE BASICS PASSWORD#
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There is a try-catch statement with no logic in the catch which means any errors will go unnoticed. The table name from each field name, if there was a JOIN then each table in the JOIN may be aliased which will be shown later. In this case the command text can be improved by removing

The SQL SELECT statement is in a string variable with the table name preceding field names, this usually happens when a developer writes the query in the database and paste the statement into their code. Since this is a read operation using a DataSet is overkill as only a DataTable is needed to read in data while depending on the application’s purpose may use a lighter weight container to populate the DataGridView control.

#MICROSOFT ACCESS DATABASE BASICS CODE#

cause orphan records and code to throw exceptions because If someone comes along that find this application not doing what they want that user can circumvent your application and open the database, make changes and very possibly cause issues in your program e.g.

#MICROSOFT ACCESS DATABASE BASICS PASSWORD#

The second issue is there are several places were the same connection string is duplicated and lastly, the database is not protected with a password which may or may not be needed yet in many cases Creating a dynamic connection will be shown later on. The connection string is hard coded which means to deploy the application to another computer the path needs to be dynamic rather than hardĬode. In the code sample below, data is read from the database in the load event of the form. In this case the developer is novice level with the intent to start off by reading from an employee table and display the data intoĪ DataGridView control with an option to find an employee by last name. The following will lay the background to moving towards writing better code to access a database. Description Novice level reading and searching See the database design section below for ideas. Up struggling with a bad database design.

#MICROSOFT ACCESS DATABASE BASICS HOW TO#

Without problems that come from writing code without a clear understanding of how to interact with a Microsoft Access (MS-Access) database.īefore a Visual Studio solution is created first work out the database design, test the database to ensure all business requirements are met so that there is a clear path to follow rather than writing code and along the way end In this code sample/article methods which are also best practices will be introduced with the intent to allow a developer to write data centric applications

#MICROSOFT ACCESS DATABASE BASICS PLUS#

You will complete all of these using Microsoft Access.Įxternal attendees: £110 plus VAT per candidate.Working with Microsoft Access database is relatively easy when a developer understands options to interact with a database and has a decent understanding of writing code yet these easy methods that seemingly work can quickly causeĪ developer to encounter problems on every turn of developing a data centric solution for their task.

navigate between tables, forms, reports and queries using the Database Window.

create formulae within Access to the summarise data in reports.

create reports based on tables or queries.

create queries based on multiple tables.

create and execute queries to retrieve specific information.

create and edit forms used to enter information.

create tables within a database into which records can be entered.

To introduce ways in which information can be displayed and obtained from a database.Īfter completing this course you will be able to:.

To introduce the concept of a database.

Using a filter in a table’s datasheet view.

Locating specific records within a table.

Formatting the appearance of a report using the available tools.

Creating various types of reports using basic reports and the report wizard.

Creating, saving and executing queries based on two tables.

Creating, saving and executing queries based on one tableĬreating queries in design view based on two tables.

Formatting the appearance of a form using the available tools.

Entering information into a table using Datasheet View.

Changing the properties for the fields in the table.

Defining a primary key and indexing fields within a table.

This course is an introduction to Access covering tables, forms, queries and reports.Ī basic understanding of Microsoft Windows. Queries are used to retrieve information from the database, which can then be displayed as a report. It is a tool for storing information which can then be retrieved using reports and queries.Īll the information in the database is held in tables created by the user and forms are used to add information to the database in a more user friendly format.

#MICROSOFT ACCESS DATABASE BASICS SOFTWARE#

Microsoft Access is a database software application.