oltp database design

Database Structure Design and how to maximize the use of indexes and database Indexes For example, a message table The structure is as follows: Id (auto-incrementing primary key) Content (Content) UserId (speaker Id) IsWonderful (whether it is a brilliant speech) Top (whether it is set to the Top) IsBarrage (whether it is a bullet screen) When the table data i

Oracle442 application scenarios --------- database logic object management application scenarios, database Logic Design Use Case 128: create a temporary table Create a temporary table temp_goods Create global temporary table temp_goods(GoodsId NUMBER,GoodsNum NUMBER,Price NUMBER)On commit delete rows; Create a temporary tablespace Create temporary tablespace tbs_

http://q.cnblogs.com/q/39658/ On the design of the table structure of the infinite Classification database, traversing the efficiency of all products under a certain classification The database table structure is like this: [Category] Category table ID (int) Category IDParentID (int) parent class IDname (nvarchar (50)) category names [Product] Product table Id (i

Import java.sql.Connection;Import Java.sql.DriverManager;Import Java.sql.ResultSet;Import java.sql.SQLException;Import java.sql.Statement;Single Case design patternpublic class ConnectionFactory {Create an instance of itselfprivate static ConnectionFactory ConnectionFactory = new ConnectionFactory ();Registering driversPrivate ConnectionFactory ()//use private rather than public{Try{Class.forName ("Com.mysql.jdbc.Driver");//If the other

Label:Database naming rules: Named according to the actual meaning of the project. Data table naming rules: 1. The names of the data tables are mostly in the plural form of nouns and are lowercase; 2. Use the prefix "Table_" as far as possible; 3. If the table name of the data table is made up of multiple words, try to connect it with an underscore, but do not exceed 30 characters, and if more than 30 characters are used, shorten the name of the table by using an abbreviation; Field naming rul

and multi-site update functions, with location transparency and venue autonomy. It provides a global database name and supports remote process calls. Development Tools The Development kits provided by Oracle are developer/2000, designer/2000, discover/2000, and Oracle office. They cover all aspects from modeling, analysis, design to implementation. Developer/2000 includes: Oracle Forms is used to quickly g

Data Center reconstruction-Database Design-Data Center reconstruction Database I. Draw an ERTU A E-R Diagram, also known as an Entity Relationship divisor, provides a way to represent Entity types, attributes, and associations to describe the conceptual models of the real world. Drawing Method: (1) determine all entity sets (2) Select the attributes that the obje

there are about 500 kinds of goods, a total of 10 categories, you can build a view binding data source for summary table 4, so that you can make full use of the data information of summary table 4, so as to further improve the performance of the system optimization.There is a commodity table (product number, product name, unit price) and sales table (sales document number, product number, sales time, sales volume, sales unit price). Among them, the product number represents a class of goods, co

Tags: blog http io using data SP C on logThe main functions we need in terms of database are as follows: The contact has a name and e-mail address. A contact can have more than one address. Contacts can have multiple phones. In order to achieve the goal, we need to create the following tables in the database.The table-to-table relationship is as follows:The database script can be downloaded di

Here is a preliminary design with PowerDesigner, which may be modified later.1. Start PowerDesigner New physical data model2. Tool bar3. New Table Model4, add the first table, you can double-click the table or the right-click menu to open the following windowDon't forget to select the owner of dbo and switch to the Columns tabUpon completion, the form of the table was of this virtue.Follow this procedure to add additional tables in turn6. Add Table re

Label:Three products of demand analysis: Business concept map, business flowchart, use case.Two inputs for database analysis: Business concept map, business flowchart.There are two types of business Modeling: Business Architecture modeling and business behavior modeling.Business Structure Modeling: The data structure is mainly analyzed;Business Behavior Modeling: The process, process and so on are mainly analyzed.Learn e-p diagram (entity diagram) and

Database Table Design for Mysql optimization and database table Optimization for mysql Separation of Fixed Length and Variable Length Separation of common and uncommon Columns For example: This table is not good enough and can be optimized. Analysis: Except the username/intro column, each column in this table is fixed. We may wish to set the length of a

One, the distinction of the concept Some people confuse object-oriented database design (i.e. database schema) with object-oriented database management system (OODBMS) theory. In fact, the former is a database user-defined database