3 prepare to transition to a logical standby database

... Your Logical Standby Database • Configure the database guard to control user access to tables • ALTER DATABASE GUARD command keywords: – ALL: prevents users from making changes to any data in ... in the database – STANDBY: prevents users from making changes to any data maintained by Data Guard SQL Apply – NONE: normal security • Query GUARD_STATUS column in V $DATABASE • Database guard level ... Objectives After completing this lesson, you should be able to the following: • Explain the advantages of SQL Apply • Explain when to use a logical standby database • Create a logical standby database...

Ngày tải lên: 09/12/2013, 16:15

... ADO.NET automatically stores database connections in a pool Connection pooling offers a great performance improvement because you don't have to wait for a brand new connection to the database to be ... Server database */ using System; using System.Data; using System.Data.SqlClient; class MySqlConnection { public static void Main() { // formulate a string containing the details of the // database ... SQL Server and use those credentials to connect to the database This saves you from providing a separate username and password to SQL Server You can use integrated security in your program by specifying...

Ngày tải lên: 07/11/2013, 10:15

... SqlConnection("server=localhost ;database= Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler); ... example defines a method named StateChangeHandler to handle the StateChange event You'll notice that the second parameter to this method is a StateChangeEventArgs object You get the original ... state of the connection to the database The State property returns a constant from the ConnectionState enumeration Note An enumeration is a list of numeric constants, each of which has a name...

Ngày tải lên: 14/12/2013, 13:15

... secured database while the actual permissions are stored in the database file When you connect to a secured Jet database, the user ID and password are validated [ Team LiB ] against the values ... string attributes in addition to those defined by ADO.NET To open a database secured by Microsoft Access user-level security, use the Jet OLEDB:System Database attribute in the connection string to ... Microsoft Access user-level security requires an additional file—the workgroup information or MDW file—in addition to the database or MDB file This file contains the user and group information for...

Ngày tải lên: 24/12/2013, 05:15

... schema and data for the table da.FillSchema(ds, SchemaType.Source, TABLENAME); da.Fill(ds, TABLENAME); // Columns in XML representation of data as attributes foreach(DataColumn col in ds.Tables[TABLENAME].Columns) ... System.EventArgs e) { ds = new DataSet( ); // Create the DataAdapter SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM " + TABLENAME, ConfigurationSettings.AppSettings["Sql_ConnectString"]); // Load ... The default value is null which results in the return of a handle to an internal representation to an empty XML document xpathNamespaces A text parameter that specifies the namespace declarations...

Ngày tải lên: 21/01/2014, 11:20

... diagrams in (3) equally well: (3) Verb Form katab kattab kaatab _?aktab takattab takaatab _nkatab k tatab ktabab staktab ktaabab ktawtab kta_w_wab ktanbab kta~_bay dai3.raj _tadal3ra j d.harjaj ... syllables cannot share a mora An interesting alternative is to add an operator -1 that looks backwards along the dominance relationS.: The constraint that two syllables cannot share a mora could ... 1: Arable Data based on (McCarthy 1981) Partiality Crucially for the analysis of Arabic, it is possible to have a formula which describes more than one diagram Consider the formula M ( a A (#,...

Ngày tải lên: 09/03/2014, 01:20

... the water wash was % 13) Glacial acetic acid (0.5 mL) was added, the layers were separated, and the organic layer was washed again with water The layers were separated, and the organic layer was ... was added via syringe The reaction mixture was allowed to warm to room temperature and stirred for days Ethyl acetate was added to the reaction mixture, which was then transferred to a separation ... addition, the antineoplastic drug fludarabine is an arabinonucleoside, and the antineoplastic drug clofarabine is a 2¢-fluoro-2¢-deoxyarabinonucleoside We find that araUMP (as well as dUFMP) binds...

Ngày tải lên: 16/03/2014, 18:20

... default database v Migrate your default Apache Derby database to the default managed IBM DB2 database and then switch your database to a non-default database The upgrade process automatically ... your database to any type of non-default database, you cannot migrate your database data Related tasks: Configuring the database Determining your database migration path Switching the database to ... database to a non-default database Verifying a successful database connection Switching the database to the managed IBM DB2 database Database configuration attributes Database...

Ngày tải lên: 31/03/2014, 16:20

... weed, pepper, and mustard Cut thawed fish into cubes and add to sauce along with potatoes Pour into a quart casserole Mix bread crumbs with melted margarine and sprinkle on top Bake at 350F degrees ... Refrigerate until cool, then stir in bananas 2) To Assemble: Cut cake in layers, using a long serrated knife Place layer on a serving plate and spread with about 1/2 cups filling Top with a second layer, ... a time, beating well after each addition Sift flour, salt and soda together Add to creamed mixture alternately with buttermilk, beating well after each addition Stir in lemon extract Pour into...

Ngày tải lên: 03/05/2014, 10:35

... illustrates that an option loses its value at an accelerating rate as it approaches expiration Another way of stating this is that the proportion of an option’s daily time decay to its value increases ... potential risk is the full amount that XYZ may decline below 96 An investor may wish to purchase XYZ at a lower level than the current market price As an alternative to an outright purchase, he may ... ‘open’ An example of a call sale Again, suppose that GE is trading at 18.03, and the April 18.00 calls are trading at 0.58 If you sold one of these calls, then at April expiration the break-even...

Ngày tải lên: 21/06/2014, 08:20

... potential 100 call or put priced at The following discussion becomes somewhat more advanced You may return to it later, or have a glance now 6  Gamma and theta Gamma and volatility trading The gamma ... investor can take the amount of risk that he is able to justify and manage This part outlines the major strategies that spread risk These strategies can be traded on all the exchanges, and, with ... time decay It is important to know how much the vegas of options on a particular contract can be affected by changes in volatility, and for that you need to research the past historical and implied...

Ngày tải lên: 21/06/2014, 08:20

... Long call spreads and long put spreads are the safest way to trade options A final note The difference between a spread and a straight call or put is that the spread’s maximum profit/loss can be ... have a contingency plan as part of your risk scenario At the same time as you place your spread order, you should also place a buy-stop, market order for a covering option that is activated at ... get a greater profit range but you pay more You need to technical analysis to determine which strikes to spread Also, call spreads and put spreads can be any distance from the underlying The trade-offs...

Ngày tải lên: 21/06/2014, 08:20

... decreasing historical and implied volatility, and low historical and implied volatility Spreads for volatile markets, such as the long straddle, profit from increased volatility, both historical and ... soundly, and you’ll be easier to live with The following spreads all have more manageable risk Again, all these spreads can be traded in one transaction on most exchanges Their bid–ask market should ... potential should also be assessed, and any contingency plans prepared The following is just one example of a hybrid spread Bullish strategy If a call purchase can be financed by the sale of a put,...

Ngày tải lên: 21/06/2014, 08:20

... contract has the greater vega, the spread will lose its value If a stock makes a large upside move, both calls may go to parity, and the spread will become worthless If a stock makes a large ... spreads Most calendars traded are call calendars, but there is no reason not to trade put calendars The profit/loss characteristics are practically identical, except in the OEX and other American ... spread to the February–November 180 and 260 call calendar spreads it can be seen that as the underlying moves away from the strikes, the calendar spreads have less value Because of this latter fact,...

Ngày tải lên: 21/06/2014, 08:20

... there are two advantages to a call purchase They must both be seen as alternatives to buying a stock or other underlying O The first is to take advantage of market gains O The second is to limit ... limit exposure to capital risk 197 198 Part  Thinking about options It is inaccurate and misleading to think of a call as simply a chance to win’, when it is equally a chance not to lose Furthermore, ... historical data that large price changes in many underlyings occur with greater frequency than are accounted for by normal distribution At least once in a generation an asteroid hits the stock market...

Ngày tải lên: 21/06/2014, 08:20

... opportunity arises, as it does from time to time, it’s an almost risk-free way to make money So if you learn about the arb, then you’re prepared to take advantage of it when you see it Read Part at least ... Occasionally, there is a small amount of profit to be made by trading the components of a conversion separately For example, a trader might be able to sell the above call at 34.50, thereby making ... Part  Basic non-essentials A call and a put at the same strike have the same amount of time premium, or volatility coverage The real problem of put–call parity is that for many options contracts...

Ngày tải lên: 21/06/2014, 08:20

... elusive variable, and in the end this is what options are really about Volatility data is also available from data vendors and exchanges O Trade options with a durational outlook; when the duration ... turns out that he bought a toxic asset It was soon revealed that the takeover bank had a 242 Part  Basic non-essentials corrupt balance sheet Unable to finance the takeover bank’s liabilities, ... to create spreads, and you have a basic understanding of volatility Most importantly, you have an understanding of risk You understand how the variables interact and how to employ those variables...

Ngày tải lên: 21/06/2014, 08:20

... implied volatility Vertical spread A call or put spread Volatility A one-day, one standard deviation move, annualised Volatility, historical Volatility averaged over a time period such as 10, 20 ... amount of an option’s value that corresponds to volatility coverage Time spread See Calendar spread Underlying An asset upon which an option’s value is based This can be a stock or stock index, ... Global Financial Markets (2010) by Stephen Valdez, and Philip Molyneux, Palgrave Macmillan A first-rate intro to this business Options Plain and Simple (2000) by Lenny Jordan, Prentice Hall A classic,...

Ngày tải lên: 21/06/2014, 08:20

... Ltd.) PART THREE Practical Examples 205 I wanted to play it for breakout, so I made a choice to buy the bottom of the minirange at $2913/16 with a stop at $2911/16 The range was too narrow to scalp ... the half back again, because the continuation signal was given Or I could not add that half back and just let the remaining half that I had ride as the continuation signal was given 216 PART ... would have some cushion to work with so that I wouldn’t care as much about closer resistance I could have scaled into this area if I had wanted to The next movement resistance was back again at the...

Ngày tải lên: 22/06/2014, 18:20