Anil K. Nori

Mobile and embedded databases

Recent advances in device technology and connectivity have paved the way for next generation applications that are data-driven, whose data can reside anywhere, can be accessed at any time, from any client. Also, advances in memory technology are driving the capacities of RAM and Flash higher, and their costs down. These trends lead to applications that are mobile, embedded, and data-centric. This tutorial presents an overview of the mobile and embedded database systems and their applications.

Distributed caching platforms

With the advances in processing, memory, and connectivity technologies, applications are becoming increasingly distributed, data-centric, and web based. These applications demand support for large number of users at high performance, requiring extreme scale, high availability, and low latency data access. Such applications are known as Extreme Transaction Processing (XTP) applications. Distributed Caching Platforms exploit the advances in the memory and networking technologies to fuse memory on multiple machines into a single unified global memory providing data access at low latencies. These Distributed Caching Platforms are evolving into in-memory data platforms for XTP applications. This tutorial provides a comprehensive overview of Distributed Caching Platform technologies and their usage.

The ADO.NET entity framework: making the conceptual level real

This paper describes the ADO.NET Entity Framework, a platform for programming against data that raises the level of abstraction from the logical (relational) level to the conceptual (entity) level, and thereby significantly reduces the impedance mismatch for applications and data services such as reporting, analysis, and replication. The conceptual data model is made real by a runtime that implements an extended relational model (the Entity Data Model aka the EDM), that embraces entities and relationships as first class concepts; a query language for the EDM; a comprehensive mapping engine that translates from the conceptual to the logical (relational) level, and a set of model-driven tools that help create entity-object, object-xml, and entity-xml transformers.

Astoria: A Programming Model for Data on the Web

Modern Web applications built using technologies such as AJAX, Adobe flash and Microsoft Silverlight interact with data in a different way compared to previous-generation applications. Data is now a first-class construct that is exchanged over the web independently from presentation information. Astoria is both a set of patterns and an actual implementation of a programming interface for data in the Web. Astoria exposes data in a database over an HTTP interface and follows the REST architectural style for exploring and manipulating data. We demonstrate the URI patterns used by Astoria and their associated semantics, and the various data formats supported by the system. We explore specific requirements for the formats such as hyper-linking and usability for both retrieval and updates. We also demonstrate step by step how developers use Astoria to create custom data services on top of existing databases.

Composite Applications: Process Based Application Development

Real Time Enterprises derive sustainable competitiveness through a completely coordinated forward movement of every quarter of their businesses - designing, buying, selling, planning and servicing. Managers have a complete, personalized, on the moment, all the time, and everywhere available, visibility across all their business functions to make durable decisions.

The microsoft data platform

Advances in hardware, storage, devices, connectivity, and web technology are changing the way applications are designed, deployed, and managed. Applications are increasingly becoming data-centric and data is everywhere, and in all tiers (from the client to the cloud). Data across multiple tiers requires data access and management capabilities across these tiers. The Microsoft Data Platform presents a vision for an end-to-end data platform that offers data services across all tiers.

Databse technology for internet applications

Over the last few years, the World Wide Web has significantly elevated the role of Intra/Internet in an enterprise. Companies are beginning to use the web technology for Warehousing, Web Data Integration, Web Publishing, Electronic Commerce, Application Integration, etc. These web-based applications support transactions, heterogeneous data aggregation, querying, and so on. In addition, these applications must be accessible by large number of users, from anywhere, securely, at all times with quick response. Currently, many of these applications are custom developed and typically adapt multi-tier architecture. A key component in this architecture is a database, storing and providing access to relevant data over the Internet. However with the explosion of internet sites (dotcoms), commercial DBMSs like Oracle8i, DB2Universal Database, Informix Universal Server and others began enhancing databases with functionality for supporting the web-based applications. In this paper, we look at the architectures of the web-based applications using real-world cases and study the role of databases and database technology in web-based/internet applications.