Saturday, September 11, 2004

The DBMS_SQL package offers access to dynamic SQL and dynamic PL/SQL from within PL/SQL programs for eventtalks

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The DBMS_SQL package offers access to dynamic SQL and dynamic PL/SQL from within PL/SQL programs. "Dynamic" means that the SQL statements you execute with this package are not prewritten into your programs. They are, instead, constructed at runtime as character strings and then passed to the SQL engine for execution. eventtalks
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The DBMS_SQL package allows you to perform actions that are otherwise impossible from within PL/SQL programs, including:

Execute DDL statements eventtalks
DDL ( Data Definition Language) statements, such as DROP TABLE or CREATE INDEX, are not legal in native PL/SQL. On the other hand, you can use DBMS_SQL to issue any DDL statement and create generic programs to perform such actions as dropping the specified table. Of course, your session will still need the appropriate database privileges to perform the requested actions.
Build an ad-hoc query interface

With DBMS_SQL, you no longer have to hard-code a SELECT statement for a query or a cursor. Instead, you can let a user specify different sort orders, conditions, and any other portion of a SELECT statement.
Execute dynamically constructed PL/SQL programs eventtalks
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In a database table you can store the names of procedures that perform certain calculations. Then build a front-end to that table, which allows a user to select the computation of interest, provide the inputs to that program, and then execute it. When other computations need to be offered to the user, you add a row in a table, instead of modifying one or more screens.

DBMS_SQL is simultaneously one of the most complex, most useful, and most rewarding of the built-in packages. It may take some time for you to get comfortable with how to apply the technology. Once you are up and running, however, you will be amazed at the feats you will be able to perform!

Monday, October 14, 2002

eventtalks Flat-panel TVs: plasma, LCD, and how they compare bag 1

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Flat-panel TVs: plasma, LCD, and how they compare bag 1
The biggest television technology revolution since color, flat-panel plasma and LCD TVs are well on their way to replacing tubes as the TV technologies of choice. You can hang flat sets on the wall, on the ceiling, or above the mantle in place of a trophy buck--although most people just put 'em on stands. The two major types of flat-panel TVs are plasma and LCD, so we'll go over each type separately and then compare them in a chart at the end.

Plasma

Upside:

Downside:

Forecast:


As little as 3 inches thick; very good home-theater image quality in best examples; wide viewing angle; superior motion resolution.

Less energy-efficient than LCDs; slight potential for burn-in; sometimes lower native resolution than similarly sized LCDs.

Prices have fallen, and pictures have improved dramatically, perpetuating plasma's place as king of the flat-panel home-theater hill.
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With prices starting about $700 for the least expensive models, a coveted plasma TV is within reach of most shoppers. But now that you can get a 42-inch LCD for a similar chunk of change, plasma TVs have to depend on factors other than price to remain competitive. One area where plasma still reigns, however, is in very large screen sizes. Today's 50-inch plasmas--the plasma TV sweet spot--are still less expensive than similarly sized LCDs, and in even larger screen sizes the gap widens considerably. That said, big-screen plasmas are still a solid chunk of change more than rear-projection sets.
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Thursday, October 10, 2002

eventtalks Attaching text to paths

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Attaching text to paths

You can align text to a path that is open or closed, with curve or corner points. The text can be linked to other paths or text blocks. Type specifications of text attached to a path remain intact. You can apply transformations to text attached to a path as you would any other object.

You can flow two lines of text on a closed path. The characters up to the first carriage return flow along the top of the path, and the characters from there to the second carriage return flow along the bottom of the path. On an open path, only characters up to the first carriage return or tab appear. An indicator dot appears in the text's link box if the text overflows the path. Left-aligned text on a curved path is respaced automatically to avoid overlapping letters.
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You can also make text flow inside a path; see Flowing text inside a path.
To attach text to a path:
Using the Pointer tool, Shift-click to select a text block and a path.
Select Text > Attach to Path, or click the Attach to Path button on the Text toolbar.
This is a picture of the feature being described.
You can edit text directly on the path or 3podm Use the Text Editor; see Using the Text Editor.
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Raja rental Plasma telah hadir eventtalks

eventtalks About vector graphics and bitmap images

eventtalks FreeHand is a vector-graphic drawing application. A vector-graphic image is resolution-independent--it can be scaled to any size and printed on any output device at any resolution, without losing detail or clarity. In contrast, bitmap graphics--commonly 3podm Used in image-editing applications--are composed of pixels. Their display depends on the resolution of the monitor or printer. Bitmap graphics can appear jagged and lose detail when they're scaled onscreen or printed at a low resolution. For more details on vector graphics, see About vector graphics.

Although vector graphics always appear at your computer's maximum screen resolution, you can specify a lower resolution for preparing draft documents. For more information, see eventtalks

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eventtalks About vector graphics and bitmap images

eventtalks FreeHand is a vector-graphic drawing application. A vector-graphic image is resolution-independent--it can be scaled to any size and printed on any output device at any resolution, without losing detail or clarity. In contrast, bitmap graphics--commonly 3podm Used in image-editing applications--are composed of pixels. Their display depends on the resolution of the monitor or printer. Bitmap graphics can appear jagged and lose detail when they're scaled onscreen or printed at a low resolution. For more details on vector graphics, see About vector graphics.

Although vector graphics always appear at your computer's maximum screen resolution, you can specify a lower resolution for preparing draft documents. For more information, see eventtalks