Overview of Physical Storage Media Magnetic Disks RAID Tertiary Storage Storage Access File Organization Organization of Records in Files Data-Dictionary Storage Storage Structures for Object-Oriented Databases

Overview of The SQL Query Language Data Definition Basic Query Structure Additional Basic Operations Set Operations Null Values Aggregate Functions Nested Subqueries Modification of the Database

Failure Classification Storage Structure Recovery and Atomicity Log-Based Recovery Remote Backup Systems

▪ Structure of Relational Databases ▪ Database Schema ▪ Keys ▪ Schema Diagrams ▪ Relational Query Languages ▪ The Relational Algebra

▪ Failure Classification ▪ Storage Structure ▪ Recovery and Atomicity ▪ Log-Based Recovery ▪ Remote Backup Systems

 3.1 Transport-layer services  3.2 Multiplexing and demultiplexing  3.3 Connectionless transport: UDP  3.4 Principles of reliable data transfer  3.5 Connection-oriented transport: TCP  segment structure  reliable data transfer  flow control  connection management  3.6 Principles of congestion control  3.7 TCP congestion control

Section I Steroid structure and Nomenclature Section II Steroid Biosynthesis Section III Estrogens and related Drugs Section 4 芳构化酶抑制剂 Section 5 Adrogens and Related Drugs Section 6 Progesterone and Related Drugs 孕激素 Section 7 Adrenal Cortical Hormones and Related Drugs 肾上腺皮质激素 Section 8 General Synthetic method of Steroids

• 一维数组与多维数组 • 特殊矩阵 • 稀疏矩阵 • 字符串 • 广义表

§1 Treatment of variation method for the H2+ ion §2 Molecular orbital theory and diatomic molecules §3 Valence bond(VB) theory for the hydrogen molecule and the comparison VB theory with Molecular Orbital theory(MO)

7.1 periodicity and lattices of crystal structure 7.2 Symmetry in crystal structures 7.3 X-ray diffraction of crystals