1. Blue Group (ADO) 3/10/98 Universal Data Access with ActiveX Data Objects The Blue Group *Jennifer Kochan *Rebecca Orozco *Chris Papandria *Alicja Stanczak

2. Blue Group (ADO) 3/10/98 Outline Universal Data Access ODBC OLE DB ADO Overview ADO Examples Conclusion

3. Blue Group(ADO) Blue Group (ADO) 3/10/98 Technology is new and constantly changing In-depth look at Microsoft® Universal Data Access: Specifically ADO. Description of Universal Data Access and ADO Two working examples of data access using ADO –Microsoft’s Internet Explorer –International Software Group’s Navigator Overview

4. Blue Group(ADO) Blue Group (ADO) 3/10/98 End users want uniform access to ALL types of data (hierarchical and relational). End users want to combine different types of information. Simple data stores don’t want to implement relational engines in order to expose a common interface. IS Managers do not want to move the data from its original location. WHY? Universal Data Access

5. Blue Group(ADO) Blue Group (ADO) 3/10/98 Universal Data Access WHO? Microsoft Data Access Components (MDAC) ADO (ActiveX Data Objects) OLE DB ODBC (Open Database Connectivity)

6. Blue Group(ADO) Blue Group (ADO) 3/10/98 Universal Data Access With these tools, Microsoft is trying to provide the following standards: High-performance access to data - New access method should provide same level of performance -Performance must be maintained as usage grows Reliability -database solutions perform reliably (fail-safe) -minimize maintenance and support costs Vendor commitment and Industry Support -Easy to use interface that works with any tool or language -Leverage skills developers already have

7. Blue Group(ADO) Blue Group (ADO) 3/10/98 Universal Data Access WHAT? Microsoft’s strategic application-level programming interface to data and information Designed for those developing client server or Web-based data-driven solutions Provides a framework so that data can be accessed from multiple sources on many different platforms

8. Blue Group(ADO) Blue Group (ADO) 3/10/98 Universal Data Access What types of data need high-performance universal access? –Production Databases –File Systems –Computed Data –Indexed Sequential files –Personal Databases –Spreadsheets, Project Management, Email, Directory Services,...

9. Blue Group(ADO) Blue Group (ADO) 3/10/98 Universal Data Access ADO is all the client needs to know in order to access data OLE DB defines a component architecture for Universal Data Access Microsoft is committed to standards, ODBC and JAVA support

10. Blue Group(ADO) Blue Group (ADO) 3/10/98 ODBC (Open Database Connectivity) Provides access to different relational data on multiple platforms Open standard originally created by Microsoft in 1992 Relies on ANSI SQL to define its functionality Broadly supported interface with over 170 drivers

11. Blue Group(ADO) Blue Group (ADO) 3/10/98 OLE DB OLE DB is a Microsoft COM-based set of standard interfaces for Universal Data Access Database architecture designed to provide access to data regardless of location or type Access relational as well as nonrelational information sources including mainframe, e-mail/file system stores, text, graphical data etc... By definition, OLE DB is a C++ API. It is not language independent (that’s where ADO comes in) OLE DB is fully able to leverage existing ODBC drivers OLE DB heavily uses COM and DCOM therefore is better for the Internet than ODBC

12. Blue Group(ADO) Blue Group (ADO) 3/10/98 ADO (ActiveX Data Objects) ADO Rows of Data SQLData OLE DB SpreadsheetData address: http:www.microsoft.com/oledb/ ole db Product info specification Download Resources e HTMLData OLE DB MailData ISAMData 0:00.00 Begin Transaction T000 0:00.15 Commit Transaction T000 0:00.17 Begin Transaction T001 0:01.00 Join Transaction T001 Resource R902 0:02.07 insert 9.72 to Resource R902 0:05.17 Begin Transaction T002 0:06.92 insert 8.73 to Resource R902 0:07.18 Join Transaction T001 Resource R910 0:07.19 Join Transaction T002 Resource R731 0:09.27 insert 1913.87 to Resource R902 0:09.28 delete 1913.87 from Resource R910 0:09.30 Commit Transaction T000 LogFile OLE DB Application

13. Blue Group(ADO) Blue Group (ADO) 3/10/98 ADO (ActiveX Data Objects) Strategic High-level data access objects –Provides a uniform interface to data for all business application programmers –Merges RDO and DAO “Language Neutral” –C/C++, Java, Visual Basic ®, VBScript Provides access to underlying Rowset –Ultimate extensibility –OLE DB and ADO clients can share data

14. Blue Group(ADO) Blue Group (ADO) 3/10/98 ADO Examples Example using Commercial Middleware product. Example using Microsoft Internet Explorer and Access.

15. Blue Group(ADO) Blue Group (ADO) 3/10/98 Conclusion -Thank You- Our Website Questions?