orcad footprint

the two functions confirms my idea that when the previous function executes, it reads all the result sets from the server side to the client side of the buffer, and the second one does not, which means "unbuffered (not buffered)". That is, if you execute a SQL statement with Mysql_unbuffered_query () that returns a large number of result sets, PHP memory is not occupied by the result set until the result is traversed. And with mysql_query () to execute the same statement, the function returned,

Recently on the memory of the program to do some optimization, achieved good results, summed up some experience, briefly said, I believe that we will write a good quality program to help The following discussion is for 32-bit systems that are not applicable to 64-bit systems, Often you write a program, a test, the function is no problem, a look at the memory footprint is not much, not to consider other things. However, it is possible that the progra

disk space the file that the statistical symbolic link points to occupiesOne, du-h: This is not much to say.Du-a: When using this option, displays the directory and directory under which the subdirectories and files occupy the size of disk space.As you can see, du only displays the size of the disk space used by the download directory by default, and with the-a option, it shows not only the directory (the last row), but also the amount of disk space that each file occupies in the directory.Du-s

MySQL learning footprint record 02-SELECT the table structure and data used in this query mysql> SHOW COLUMNS FROM products; +------------+--------------+------+-----+---------+-------+| Field | Type | Null | Key | Default | Extra |+------------+--------------+------+-----+---------+-------+| prod_id | char(10) | NO | PRI | NULL | || vend_id | int(11) | NO | MUL | NULL | || prod_name | char(255) |

MySQL learning footprint record 01-SOURCE, SHOW 1. Import Data command: SOURCE 2. the shortcut for show columns from eg: mysql> SHOW COLUMNS FROM orders;+------------+----------+------+-----+---------+----------------+| Field | Type | Null | Key | Default | Extra |+------------+----------+------+-----+---------+----------------+| order_num | int(11) | NO | PRI | NULL | auto_increment || order_date | datetime | NO |

MySQL learning footprint record 05 -- Data Filtering -- AND, OR, NOT, IN 1. AND operator * searches for rows matching all given conditions eg: mysql> SELECT prod_id,prod_price,prod_name FROM products WHERE -> vend_id =1003 AND prod_price 2. the OR operator * searches for rows that match any given condition. eg: mysql> SELECT prod_name,prod_price FROM products -> WHERE vend_id=1002 or vend_id=1003;+----------------+------------+| prod_

MySQL learning footprint record 08 -- create a calculated field -- Concat (), AS the table data used in this article mysql> SELECT * FROM vendors;+---------+----------------+-----------------+-------------+------------+----------+--------------------------------------------+| vend_id | vend_name | vend_address | vend_city | vend_state | vend_zip | vend_country |+---------+----------------+-----------------+-------------+------------+-------

MySQL learning footprint record 10 -- Summary Data -- data used in this article, such as MAX (), MIN (), AVG (), SUM (), and COUNT () mysql> SELECT prod_price FROM products;+------------+| prod_price |+------------+| 5.99 || 9.99 || 14.99 || 13.00 || 10.00 || 2.50 || 3.42 || 35.00 || 55.00 || 8.99 || 50.00 || 4.49 || 2.50 || 10.00 |+------------+14 rows in set (0.00 sec) 1. a

Linux Command Line footprint-general Linux technology-Linux technology and application information, the following is a detailed description. Decompress the file Tar-xvf xxx.tar View Process Information Top View disk space information Df-hl View the number of folders Du-sm View the size of a single folder Du-bs dirname Compile c files Gcc hello. c-o hello Restart cron /Etc/init. d/crond start | stop | restart E

Many people like to intrude into Win2000, and there are also interface-based remote control such as 3389, so many vulnerabilities can be exploited, and articles about intruding Win2000 are everywhere, convenient. However, do you know what footprint you have left in the system? I recently made an intrusion analysis and found a lot of things. Of course, it is estimated that the intrusion time will be listed in the search file. Here, we will not analyze