DATA VALIDATION

Data Validation

Data Validation

Introduction

In computer science, data validation is the process of ensuring that a program operates on clean, correct and useful data. It uses routines, often called "validation rules" or "check routines", that check for correctness, meaningfulness, and security of data that are input to the system. The rules may be implemented through the automated facilities of a data dictionary, or by the inclusion of explicit application program validation logic.

Discussion

For business applications, data validation can be defined through declarative data integrity rules, or procedure-based business rules. Data that does not conform to these rules must negatively affect business process execution. Therefore, data validation should start with business process definition and set of business rules within this process. Rules can be collected through the requirements capture exercise.

A database system, even a simple one such as Microsoft Access would help increase the productivity of all users on the system. A simple database can be set up by a basic user, or an IT professional with the tools included in the software package. Database templates are a great way to get started with Microsoft Access and learn the basics before building our own database. All that is needed is to access the installed templates, there are many database templates in the template gallery on the Microsoft Web site. The templates range from expense report databases that we can use for our business, to personal databases to organize company phone numbers and work schedules.

Since this would be a departmental change the usage of tables would help eliminate the long search for named files on a hard drive. The table structure is the foundation of the database application. A table is a container for data about a single type of entity, such as persons or products. Using a separate table for each type of information, such as protocols means that you store data only once, which would make our database more efficient and reduce data-entry errors and lost files. Forms are used to enter data into tables. Even though it is possible to enter data directly in a table or query, forms should always be used. Forms allow validation of data and have events and properties for themselves and for their controls. The data validation is extremely important; it is one of the things that set a relational database apart from a spreadsheet.

Another reason that a database should be implemented is that we, ...