Android project actual combat database framework LitePal use detailed

... LitePal introduction LitePal is an open source Android database framework, it uses the object relationship mapping (ORM) model, and we usually use the usual development Some of the database functions are encapsulated, so that you can complete various types of tables, additions,...


Oracle opens

... Oracle Open linux After the terminal is opened, enter the following; [[email protected] ~]$ su - oracle [[email protected] ~]$ lsnrctl stop #Close the listening service first [[email protected] ~]$ lsnrctl start #Start listening service [[email protected] ~]$ sqlplus / as sysdba #Login SQL...


Other details of the database Mysql

... 目录 View is a virtual table with the same functions as the physical table. Views can be added, changed, checked, manipulated, and views are usually a subset of rows or columns with one or more tables. Modifications to the view do not affect the base table. It makes it easier for us to...


The class copy efficiency test

... is now a WCF+EF project. It was originally used to directly use the EF class for WCF. Now need to be separated, so that the WCF class and the EF class evolve independently, because the front-end and back-end personnel are different, the class design habits are different; and sometimes...


Talk about the understanding of Restful

... 1.Restful? REST is English representational state transfer or representational state transfer; Rest is an architectural style of web services; uses widely popular standards and protocols such as HTTP, URI, XML, JSON, HTML; Quantitative, cross-platform, cross-language architecture design...


Php development environment to build (1)-mysql

... 1. Install mysql, mysql-5.7.23-winx64.zip, address in my cloud disk, official website to download mysql, compressed package version, and then extract to the computer's hard drive Direct decompression. 2. After the decompression is complete, create a my.ini file in the unzipped directory...


[转] jdbc excute executeUpdate usage

... 方法 executeQuery is used to generate a single result set statement, such as a SELECT statement. The most used method for executing SQL statements is executeQuery. This method is used to execute a SELECT statement, which is almost the most used SQL statement. The method executeUpdate is...


Oracle single-line function

... 单行函数 The convenient development of the database often provides support functions that are used to perform specific operations on the data. The basic usage structure of the function in Oracle is as follows Return value Function name (column | data) According to the characteristics of the...


Internship review--database storage process and storage function && trigger 8

... Storage process : 1 Definition: It is to apply to the development of a repetitive function for the database. Is a collection of multiple SQL statements, 2 use the rules Create a stored procedure create procedure Stored procedure name (in/out/inout parameter name data type) begin sql...


Internship Review-Database-Transaction and Stored Procedures 6

... Transaction: 1 Definition: A set of operations for the database, the statements in the transaction are either executed or not executed, the innodb storage engine automatically commits the transaction by default. ! ! ! ! ! ! 2 Use the method to start the transaction start transaction,...