Pemrograman komputer 9 (database)
- 1. Pemrograman Komputer Pertemuan 09 Database Bambang Heru Iswanto, Dr.rer.nat M.Si Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 2. Learning Outcomes Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : Menerapkan penggunaan database dalam aplikasi 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 3. Outline Material Introduction to Database Stored and Index Ordering Using ADO with Visual Basic Dataset Datagrid Common Programming Errors and Problem 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 4. Introduction to Databases Database: any collection of related data used by an organization Organization: any self-contained social unit such as a company, university, hospital, or family The data in a database consist of two types: Entities Relationships Relational database: a database in which data is stored in tables 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 5. Introduction to Database Record: a row in a table Field name: the heading of a column in a table Entity-relationship diagrams (ERDs) express the relationships between entities Cardinality of a relationship refers to the number of one entity that is related to another entity 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 6. Introduction to Database ERD Symbols Related to Exactly One Related to One or More Related to Zero or One Related to Zero or More 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 7. Introduction to Database Example of ER Diagram Departemen Karyawan Manajer Kendaraan Operasional 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 8. Stored and Index Ordering Stored order A table’s original order Determined by the order in which records have been added to the table Index: a separate table of record positions, called pointers, which lists the positions of the table’s records in the desired order Key field: the field on which a table’s records are ordered 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 9. Using ADO with Visual Basic ADO is an extremely powerful data access component that allow you to access database data in many formats Using databases in Visual Basic Create a link or connection between the database, known as the data source, and the Visual Basic application Retrieve fields from tables in the database and display them on a Form Store values on the Form in the database 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 10. Using ADO with Visual Basic To use a database, an application must: Set up a connection to a data source Create a data adapter to handle the transfer of data to and from the data source and the application Create a dataset to hold the data in memory while the application works with it Add controls to the form and set their properties to bind the controls to the fields in the dataset 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 11. Using ADO with Visual Basic Setting up Data Access in Visual Basic Data Source Data Adapter Dataset Connection 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id | Windows Form
- 12. Setting Up a Data Connection Any database that is ODBC (Open DataBase Connectivity) compliant can be accessed from within Visual Basic Visual Basic provides a set of Data controls in the Toolbox that are used to set up database access To establish a connection to an Access database: Select the OleDbConnection object Drag an OleDbConnection control from the Toolbox to the Form 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 13. Setting up a Data Adapter The data adapter passes data back and forth between a data source and a program Use the OleDbDataAdapter control for a Microsoft Access database Data Adapter Configuration Wizard simplifies the task of using a database table 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 14. Setting up a Data Adapter First Screen of the Data Adapter Configuration Wizard 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |
- 15. TERIMA KASIH 01/02/11 © 2010 Universitas Negeri Jakarta | www.unj.ac.id |