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All About Market Indicators was written for everybody who participates in the stock market or is thinking of doing so It doesn t matter if you re a trader, investor, or saver, learning how to anticipate the next bull or bear market, or a possible crash, is necessary for financial survival By the end of the book, you ll be able to set up market indicators within minutes and use them to give you an unbiased, unemotional view of the market They will also help you see the bigger picture If you finish the book with a different view of this entity we call the stock market, then I ve achieved my goals Although there are no guarantees that any of the indicators in the book will lead you to unimagined riches, I can guarantee you a good read It is hoped that you keep an open mind about what you ll learn Choosing an indicator is like choosing your favorite food Some like Italian, some Thai, and others like American You can t say one is better than the other There is no one-size-fits-all indicator

To rename a mailbox, identify it by its current name and set the name property to the new name For example, the following statement renames the mailbox Odd Messages to Holding Zone:

SELECT NewBaseLine = CHANGE_TRACKING_CURRENT_VERSION(), [user|host] = CONVERT(NVARCHAR(128), SYS_CHANGE_CONTEXT), cv = SYS_CHANGE_VERSION, ccv = SYS_CHANGE_CREATION_VERSION, op = SYS_CHANGE_OPERATION, EmployeeID FROM CHANGETABLE(CHANGES dbo.Employees, 3) AS ChT; -- results: NewBaseLine user|host cv 4 SENTINEL\Aaron|SENTINEL 11 ccv NULL op EmployeeID U 2

Arguably, you could also use the trigger to store the old and new values off in a table somewhere for deferred analysis. But that would require you to manually create tables to capture all of that information, and come up with your own cleanup mechanism. And, without spoiling any surprises, you would be duplicating the functionality of another feature added in SQL Server 2008. Before proceeding, you can disable change tracking on the HR database and the dbo.Employees table using the code in listing 12.

set the name of mailbox "Odd Messages" to "Holding Zone"

It s a personal decision, and by the time you ve finished, you ll have a better idea what works for you Although there are a dozen reasons why you d use market indicators, perhaps the most important is this: The next time someone asks you, What s the market going to do next you know what to do hand over a copy of my book! I hope you have a good time I ll have more to say later

USE [HR]; GO ALTER TABLE dbo.Employees DISABLE CHANGE_TRACKING; ALTER DATABASE HR SET CHANGE_TRACKING = OFF;

The mailbox s name An integer giving the number of unread messages in a mailbox The account to which the mailbox belongs The account to which the mailbox belongs

Change data capture (CDC) is similar to change tracking in that it captures information about changes to data. But the information it captures (and how) is significantly different. Instead of capturing the primary key for each row that has changed, it records the data that has changed, for all columns, or for the subset of columns you specify. It records all of the data for INSERTs and DELETEs, and in the case of UPDATEs, it records both the before and after image of the row. And it does this by periodically retrieving data from the SQL transaction log, so the activity does not interfere directly with your OLTP processes. It does require that SQL Server Agent is enabled and running. The primary motivation for including CDC in SQL Server 2008 was to facilitate an easier process for extract, transform, and load (ETL) applications. Making all of the changed data available separately allows the application to pull only the updated data, without having to go to the base tables for the data (or to verify timestamp columns or perform expensive joins to determine deltas). You can investigate CDC in much more depth starting with the Books Online topic, Overview of Change Data Capture, located at http://msdn.microsoft.com/en-us/library/cc627397.aspx. To set up CDC, you must be running Enterprise or Developer Edition, and you must enable it at the database level first, and then for each table you want to capture. Note that unlike SQL Server Audit and change tracking, CDC features are enabled and disabled via system stored procedure calls. Using the same HR database and dbo.Employees table as in previous sections, listing 13 shows the commands necessary to start capturing data changes.