Bài giảng Hệ quản trị cơ sở dữ liệu - Chương 12 giới thiệu về transaction management. Các nội dung được trình bày trong chương gồm có: Transactions, transaction ACID properties, concurrency in a DBMS, atomicity oftransactions,... Mời các bạn cùng tham khảo.
Chapter 15 - Transaction management. This chapter presents a broad coverage of transaction management. Before you can understand DBMS support for transaction processing, you need a more detailed understanding of transaction concepts. This chapter describes properties of transactions, SQL statements to define transactions, and properties of transaction processing.
Ebook "Database System Concepts" present on: Relational databases, database design, data storage and querying, transaction management, system architecture, data warehousing, data mining, and information retrieval,...
Chapters 1 through 3 focus on the concept of CRM. Chapter
1 defines what CRM means in today’s business environment
and why only organizations with clear and effective CRM strategies
are destined for long-term success. Chapter 2 introduces
the Customer Service/Sales Profile model, a brand new tool for
understanding the dynamic relationship between stand-alone
service transactions, repeat customers, and the creation of wonderful
customer advocates who love to spread the good word
about you and your products and services.
In a “perfect world” environment with no taxes, no transaction costs and perfectly efficient financial markets, capital structure does not matter.
This is known as the Independence hypothesis: firm value is independent of capital structure.
Bài giảng "Chương I: Tổng quan về Hệ quản trị cơ sở dữ liệu Database Management System" nhằm giúp các bạn có được cái nhìn bao quát về cơ sở dữ liệu (Database) cũng như về hệ quản trị cơ sở dữ liệu (DBMS), hệ cơ sở dữ liệu (Database system), các yêu cầu khi xây dựng một DBMS, một số khái niệm quan trọng như: giao tác (transaction), Concurrent Control, khôi phục sau sự cố,...
When you write stored procedures, triggers, and user-defined functions, you need to
decide whether to use traditional Transact-SQL or a programming language that is
compatible with the .NET Framework, such as Visual Basic .NET or C#. Transact-
SQL is best for situations in which the code primarily performs data access with little
or no procedural logic. Programming languages that are compatible with the
.NET Framework are best-suited for computationally-intensive functions and
procedures that feature complex logic or for situations where you want to take
advantage of the .
logging methods provide reconstructing the DB to reflect the result of committed transactions
locking (or validation) methods provide serializability of transactions
Problem yet uncovered: "dirty data"
data written by an uncommitted transaction (to buffers or to disk)
may lead to inconsistency, if read by others
When a transaction ends with a ROLLBACK operation, a
possible approach is to simply abort the transaction in all
replicas without verifying if previously returned results
were correct (e.g., this solution is adopted in ). In
our system, this could be easily implemented by execut-
ing a BFT operation that aborts the transaction in each
This approach does not lead to any inconsistency in
the replicas as the database state is not modiﬁed.
Once records are inventoried, determine the immediate and future usefulness of the
records. In general, records should be retained only as long as they serve the
immediate administrative, legal and/or fiscal purposes for which they were created.
When records no longer serve these purposes, they should be disposed of or preserved
for archival purposes, whichever is appropriate.
Chapter 6 "Foreign Exchange Market" drug lecture Multinational financial management introduce to you the content organization of the foreign exchange market, transactions in the interbank market, foreign exchange market condition,...
The issues reviewed in the Staff Report, as well as the study required by the
Sarbanes-Oxley Act, are consistent with recent Commission initiatives to review the role
of rating agencies in the U.S. securities markets and their regulatory treatment.
Commission recognized that, in recent years, the importance of credit ratings to investors
and other market participants had increased significantly, impacting an issuer’s access to
and cost of capital, the structure of financial transactions, and the ability of fiduciaries
and others to make particular investments.
Whole Database Backup
Whole database backup (also known as whole backup) refers to a backup of all datafiles and the control file of the database. Whole backups can be performed when the database is closed or open. This is the most common method of backup.
The whole backup that is taken when the database is closed (after the database is shut down using the NORMAL, IMMEDIATE, or TRANSACTIONAL options) is called a consistent backup.
Incomplete recovery reconstructs the database to a prior point in time (before the time of the failure).
Note: This situation results in the loss of data from transactions committed after the time of recovery. This data will need to be reentered manually if required. Perform this recovery only when absolutely necessary. Incomplete recovery can be a difficult and time-consuming operation.
Allocation of a Rollback Segment
When a transaction begins, a rollback segment must be assigned to this transaction. A transaction can request a specific rollback segment using the following command:
SET TRANSACTION USE ROLLBACK SEGMENT rollback_segment
If no such request is made, the Oracle server chooses the rollback segment with the fewest transactions and assigns it to the transaction.
Transactions use extents of a rollback segment in a sequential, circular fashion, moving from one to the next after the current extent is full.
Chapter 9 "Currency Swaps" lecture International financial management introduce to you the content: The swap bank, swap transaction, an example of a currency swap. Invite you to refer to the lecture content more learning materials and research.
Chapter 10 "Transaction Exposure" lecture International financial management. There are three types of exposures: Transaction exposure, Translation exposure, Operation exposure. Invite you to refer to the lecture content more learning materials and research.
Learning objectives of this chapter include: Explain why many firms invest in foreign operations; explain why foreign investment is different from domestic investment; describe how capital budgeting, in an international environment, is similar to or dissimilar from that in a domestic environment; understand the types of exchange-rate exposure and how to manage exchange-rate risk exposure;...
Bài giảng "SQL Server 2008: Managing Transactions, locks" cung cấp cho người học các kiến thức: Định nghĩa Transactions, thuộc tính của Transactions, các loại Transaction, công dụng Transaction log, định nghĩa Lock, các vấn đề đồng thời (Concurrency problem), các kiểu Lock. Mời các bạn cùng tham khảo.
Database Management Systems: Chapter 0 - An Overview of a Database Management System includes about What is a DBMS? DBMS Capabilities, Data-Definition Language Commands, Answering the query, Buffer manager, Transaction processor’s tasks.