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Bevel and Emboss: Text can appear embossed into -Specify the Style: Outer Bevel (affects only the areas or above the page, depending on how the highlights around the text), Inner Bevel (affects only the areas within and shadows are combined the text), Emboss (adds both an Outer and Inner Bevel), Pillow Emboss (adds an Inner Bevel but switches the colors in the Outer Bevel), Stroke Emboss (adds a bevel inside an outline created with the Stroke effect) -Specify the Technique: Smooth creates a blurred bevel, Chisel Hard creates a hard-edged bevel, and Chisel Soft is somewhere in between those two -Adjust Depth to increase the contrast -Specify Direction (up or down) to determine whether text looks recessed or truly embossed -Adjust Size of the bevel -Adjust softness of any blur in the beveled edges -Select Use Global Light to keep the direction of the light source constant throughout the entire image -Adjust Angle to change the direction of the light source -Adjust Altitude of light along a semicircle in the sky; 90 degrees is directly overhead -Select Contour to add texture in the beveled edge -Select to add texture to the text itself -Specify the Blend Modes, Color, and Opacity of the highlight and shadow

drop table <table_name> purge ;

purge table <table_name> ;

remove the table from the recycle bin If there are several objects with the same original name, the oldest is removed Avoid this confusion by specifying the recycle bin name instead PART III

Table 7-3

purge index <index_name> ;

remove an index from the recycle bin again, you can specify either the original name or the recycle bin name

Layer Styles and Associated Options when Added to Type Layers (continued)

purge tablespace <tablespace_name> ;

purge tablespace <tablespace_name> user <user_name> ;

purge user_recyclebin ;

-Adjust Blend Mode to change how the overlay reacts to pixels below it -Adjust Opacity of the overlay -Adjust Angle of the contoured fill -Adjust Distance between the intersection of two contours -Adjust Size of total effect -Select Anti-aliased to soften rounded edges -Select Invert to achieve the opposite effect as normal -Adjust Size of stroke to change its width -Adjust Location of stroke to move it in relationship to the text itself -Adjust Blend Mode to change how the stroke reacts to pixels below it -Adjust Opacity of the stroke -Specify and assign the Fill Type: Color, gradient, or pattern

purge dba_recyclebin ;

The basic form of Flashback Query has been available since release 9i of the Oracle Database: you can query the database as it was at some time in the past The principle is that your query specifies a time, which is mapped onto a system change number and an SCN, and whenever the query hits a block that has been changed since that SCN, it will go to the undo segments to extract the undo data needed to roll back the change This rollback is strictly temporary, and only visible to the session running the flashback query Clearly, for a Flashback Query to succeed, the undo data must be available In subsequent releases of the database, Flashback Query has been enhanced substantially, and it can now be used to retrieve all versions of a row, to reverse individual transactions, or to reverse all the changes made to a table since a certain time It is also possible to guarantee that a flashback will succeed but there is a price to be paid for enabling this: it may cause transactions to fail

EXAM TIP All forms of Flashback Query rely on undo data to reconstruct data as it was at an earlier point in time

Table 7-3

Any select statement can be directed against a previous version of a table Consider this example:

ocp10g> select sysdate from dual; SYSDATE ----------------27-12-08 16:54:06 SQL> delete from regions where region_name like 'A%'; 2 rows deleted SQL> commit; Commit complete SQL> select * from regions; REGION_ID REGION_NAME --------- ------------------------1 Europe 4 Middle East and Africa SQL> select * from regions as of timestamp to_timestamp('27-12-08 16:54:06','dd-mm-yy hh24:mi:ss'); REGION_ID REGION_NAME --------- ------------------------1 Europe 2 Americas 3 Asia 4 Middle East and Africa SQL> select * from regions as of timestamp to_timestamp('27-12-08 16:54:06','dd-mm-yy hh24:mi:ss') minus select * from regions; REGION_ID REGION_NAME --------- ------------------------2 Americas 3 Asia