Tài liệu Teach Yourself Tcp/Ip in 14 Days ppt

... /users/taylor/ bin in my search path. That’s a good place to add a file using the touch command: % env PATH /users/taylor/bin:/bin:/usr/bin:/usr/ucb:/usr/local:/usr/local/bin: % touch bin/my.new.cmd % ... symbolic link. The filename shows just the specifics of the link, indicating that sys points to the directory usr/ sys. In fact, if you count the number of letters in the name usr/sys,...

Ngày tải lên: 17/01/2014, 08:20

... 178 Quiz 178 10 Inductance 183 The property of inductance 183 Practical inductors 184 The unit of inductance 185 Inductors in series 185 Inductors in parallel 186 Interaction among inductors 187 Effects ... 142 Permanent magnets 143 The solenoid 144 The dc motor 145 Magnetic data storage 146 Quiz 149 Test: Part 1 153 Part 2 Alternating current 9 Alternating current basics 165...

Ngày tải lên: 13/12/2013, 01:15

... Interval between Request or Cease command retransmissions. Default is 30 seconds. P4 Interval during which the state variables are maintained without receiving an incoming message when in ... Default is one hour. P5 Interval during which the state variables are maintained without receiving an incoming message when in the cease or acquisition state. Default is 2 minutes. R Receive...

Ngày tải lên: 25/12/2013, 13:15

... to combine three source machines to one destination machine. Relate to port numbers. Multiplexing was explained in some detail on Day 1. It refers to combining several connections into one. ... from the incoming cue, and then sending more blocks to fill the window again. The tracking of the blocks becomes a matter of bookkeeping, but with large window limits and traffic across internet...

Ngày tải lên: 17/01/2014, 08:20

... is passed a string from p_PASS_STRING called from the procedure. The return type in line 14 is simply a number telling you how many characters are actually contained in the string. Of the two ... spacing should include aligning the END LOOP with the LOOP statement and the usual indent of five spaces for statements within the loop. Listing 5.21 contains an exam- ple in which the spa...

Ngày tải lên: 15/12/2013, 05:15

... must be able to terminate itself at some pre- defined point, or the recursion would last forever. This point of termination is defined in a terminating condition. The following code example uses ... the SQL*Plus prompt. The code in Listing 7.2 illustrates the PUT_LINE command line that you can include inside a procedure. L ISTING 7.2 The PUT_LINE Command Within a Procedure CREATE OR REP...

Ngày tải lên: 15/12/2013, 05:15

... containing any of the following: OPEN stock_listing_cur (stock_listing.name, ‘ABCDEFG’); OPEN stock)listing_cur (stock_listing_name, stock_listing_price); Fetching Data in a Cursor You get data into ... pay_type 1 Jessica Loraine 2Kurt Roberts Inserting Some Data You will now insert data into the employee table for use in the remainder of the book. Type in the PL/SQL block shown in L...

Ngày tải lên: 15/12/2013, 05:15

... imagina- tion. Some common uses are • Enforcing business rules • Maintaining referential integrity • Enforcing security • Maintaining a historical log of changes • Generating column values, including ... FERMENTATION 405 GUTTING 404 SCALE PROCESSING 502 Technical Writing 406 UNLOADING 403 BOTTLING 403 BOTTLING 403 BOTTLING 403 BOTTLING 403 BOTTLING Line 8 declares the type for the nested tabl...

Ngày tải lên: 15/12/2013, 05:15

... BEGIN 11: FOR one_building IN all_buildings LOOP 12: Grab a copy of the building object. 13: this_building := one_building.bldg; 14: dbms_output.put_line(this_building.BldgName || ‘ is located in ... in Listing 12.8 in order to insert a few building objects. These will be used in later examples that show how to update object tables and how to link objects in the database. L ISTI...

Ngày tải lên: 15/12/2013, 05:15

... errors includes •Using = where := belongs • Leaving off the semicolon at the end of a statement •Using ELSEIF when ELSIF is correct •Using double quotes ( “ ) for strings instead of single quotes ... insert the needed code between those two lines. • Do the same thing when coding loops as when coding IF statements. Write the beginning and ending lines first. You can also use an editor that .....

Ngày tải lên: 15/12/2013, 05:15