ponemon study

Database Study Notes (3), Database Study Notes Tip: To run a program, you must first add the database to the specified folder, For example, if E: \ DATA is written in the code, you must first create a folder in E: \, and then compile and execute the database code. -- Add studentfgrp file groups to the database, and add studentfile. ndf to studentfgrp.Alter DATABASE studentAdd filegroup studentfgrpGOAlte

Lua Study Notes 14: multiple function return values, and lua Study NotesThe function in Lua can return multiple values. To illustrate the number of returned values in different cases, we first declare the following functions: -- No return value function fun0 () end -- one return value function fun1 () return 1end -- two return values function fun2 () return 1, 2end -- three and multiple return values functi

Golang Study Notes [5] integer and golang Study Notes integer Golang has many integer classes, but generally it is better to use int or uintt, Package mainimport ("fmt" "unsafe") func main () {var i1 int8 = 1 // 1 bytevar i2 int16 = 2 // 2 bytevar i3 = 3 // 4 bytevar i4 int64 = 4 // 8 bytevar i5 int = 5 // 32-bit: 4 64-bit: 8var i6 uint8 = 1 // 1 bytevar i7 uint16 = 2 // 2 bytevar i8 uint32 = 3 // 4 byte

Sqlite Study Notes 10: Using sqlite to query and update data in C language, sqlite Study Notes The third parameter in sqlite_exec () mentioned above, SQLite will call this callback function for each record processed in each SELECT statement executed in the SQL parameter. This section adds two functions: selectFromTable and updateTable. The instance program is as follows: # Include Bool selectFromTable ()

Java Study Notes 30, java Study Notes The sortedlist class is the implementation class of the List interface. It is a List set and allows random access to the collection elements based on the index. In addition, the consumer list is also real The Deque interface can be used as a dual-end queue or a "stack. A chain-based linear table. The following is an official description of the sort list class: ListTh

Sqlite Study Notes 4: Create and Delete tables and sqlite Study Notes If you have done so much, isn't it just to get a few tables for data? Let's take a look at how to create a new table. 1. Create a table The basic syntax is as follows: CREATE TABLE database_name.table_name( column1 datatype PRIMARY KEY(one or more columns), column2 datatype, column3 datatype, ..... columnN datatype,); Specifi

Sqlite Study Notes 2: Create a database and sqlite Study Notes In the last note, an sqlite executable file is generated, and cd is executed under the directory where sqlite is located: Sqlite3 MyDataBase. db A database named MyDataBase. db is created, and a file named MyDataBase. db is generated under the current path. # Remember not to run sqlite3 first, and then the above command, but directly ent

Java study notes 28, java Study Notes Vector is the implementation class of the List interface and supports all functions of the List interface. The Vector class is a List class implemented based on arrays and encapsulates a dynamic, The Object [] array that allows redistribution. The Vector is thread-safe and requires no program to ensure the synchronization of the set. Some methods of the Vector class a

Linux cloud computing cluster Architecture Study Notes: 1-1 rhel7 basic commands, Study Notes rhel7 1-3-RHEL7Basic commands 1.1LinuxTerminal introduction Shell prompt Bash Shell basic syntax. 1.2Use of basic commands: ls, pwd, and cd. 1.3View the system and BIOS hardware time. 1.4LinuxHow to get help, Linux shutdown command: shutdown, init, etc. 1.5Linux 7Startup level, set the server to automatically

[Struts2 Study Notes (5)] processing process and working principle of Struts2, struts2 Study Notes (1) Struts2 processing process (2) processing functions 1. strutsPrepareAndExecuteFilter is the core controller of Struts 2 Framework (after Struts 2.1.3, org. apache. struts2.dispatcher. filterDispatcher has been marked as obsolete). It is used to intercept all user requests specified by 2. When a user's req

[Struts2 Study Notes (2)] the default values in the Action configuration and the forwarding types of results in the Action, struts2 Study NotesI. default values in Action configuration Ii. Various forwarding types of result in Action (1) result configuration is similar to forward in struts1, but struts2 provides multiple result types. Common types include dispatcher (default), redirect, redirectAction,

Html5 Study Notes (1) and html5 Study Notes 1. figure \ figcaption | detail \ summary | mark learning notes Code: 2. progress \ meter The Code is as follows:

PHP Study Notes (4) and php Study Notes Some functions in the Wordpress framework: Wp_get_nav_menu ($ default ):Obtain menus Based on the condition $ default. All menus are obtained by default. $ Default is shown as follows by default: $default = array( ‘theme_location’ =>'', 'menu' =>'', 'container' =>'div', 'container_class' => 'menu-{menu_slug}-container', 'container_id' =>'', 'menu_class'=>'menu',

DOM study notes 5: dom Study NotesDOM table creation:Create a table with five rows and five columns on the page1. Event source, button 2. There must be a storage location for the generated table Node Second:Create a table with the specified number of rows and columns, and delete the specified rows and columns. Display the row color interval and highlight it:Mouse touch, highlighted Table sorting:

HTML Study Notes (5): html Study Notes 1. Javascript is a scripting language that provides user interaction, dynamic content modification, and data verification. 2. We use the script tag to embed javascript statements into html documents. 3. The script tag pair can be placed in either the head tag or the body tag. 4. If you want to use javascript to pop up a window on the webpage and write your own defined

My java Study Notes (13) Reflection (part 2), study notes Whining... This evening is a bit of a thing... As a result, there was no eclipse in the lab, and the command line was used. As a result, the environment variables were not properly configured for a long time .. Now .. Ah .. 1. The key method for viewing object fields is the get method in the Field class. Field f = c1.getDeclareFields ("name"); Obje

JAVA Study Notes (fifty-nine)-Socket programming, Study Notes socketClient Import java. io. IOException; import java.net. datagramPacket; import java.net. datagramSocket; import java.net. inetAddress; import java.net. unknownHostException;/** Client */public class Client {public static void main (String [] args) throws IOException {/** send data to the server * // 1. define the server address, port, and dat

HTML Study Notes (2): html Study Notes 1. The Form tag indicates the Form, which is used to submit data to the web server. The Action attribute is used to specify a URL to determine where the form data is submitted to the network for processing. The method attribute can only take two values, get or post, the get method is faster than the post method. 2. the Input tag is a form element. Its type attribut

DOM Study Notes 3. dom Study Notes Get nodes through node hierarchy: (important)When a node has no id or name, the link in the node is another way to get the node.Get nodes through node relationshipLink:1. parent node: parentNode, a parent node2. subnode: childNodes, which is a set of directly descendant nodes3. sibling nodes: relatively less useful, because there is no browser resolution method, the order

Study Notes for Linux _ Day2 and Study Notes _ day2 The next day, continue to learn Linux commands... I. Command for viewing the file and directory list Ls: displays files and directories in the current directory, but does not show hidden files and directories. Ls-a: displays all files and directories in the current directory. Ls-l: displays detailed information about the files and directories in the c