一、结构类型 二、理化性质 三、提取分离 四、结构鉴定 五、生物活性

Basic Concepts Tree-Structure Diagrams Data-Retrieval Facility Update Facility Virtual Records Mapping of Hierarchies to Files The IMS Database System

SQL Data Types and Schemas Integrity Constraints Authorization Embedded SQL Dynamic SQL Functions and Procedural Constructs** Recursive Queries** Advanced SQL Features**

Data Definition Basic Query Structure Set Operations Aggregate Functions Null Values Nested Subqueries Complex Queries Views Modification of the Database Joined Relations**

Structure of Relational Databases Fundamental Relational-Algebra-Operations Additional Relational-Algebra-Operations Extended Relational-Algebra-Operations Null Values Modification of the Database

Reasoning with MVDs Higher normal forms Join dependencies and PJNF DKNF

Heterogeneous and Homogeneous Databases Distributed Data Storage Distributed Transactions Commit Protocols Concurrency Control in Distributed Databases Availability Distributed Query Processing Heterogeneous Distributed Databases Directory Systems

Introduction I/O Parallelism Interquery Parallelism Intraquery Parallelism Intraoperation Parallelism Interoperation Parallelism Design of Parallel Systems

Centralized and Client-Server Systems Server System Architectures Parallel Systems Distributed Systems Network Types

Relevance Ranking Using Terms Relevance Using Hyperlinks Synonyms., Homonyms, and Ontologies Indexing of Documents Measuring Retrieval Effectiveness Web Search Engines Information Retrieval and Structured Data Directories