activiti tables

Oracle cluster and cluster tables, Oracle cluster tables Oracle clusters and cluster tables A cluster consists of multiple tables that share the same data block. It stores the related rows of these tables in the same data block, which can reduce the disk read volume required

I have long heard that the two commands, lock tables and unlock tables, literally know that the function of the former is to lock the table and the latter is to unlock it. But how to use, how to use, not very clear. Today, in a detailed study, we finally figured out the usage of 2 people.The Lock Tables command locks the table for the current thread. There are 2

I have long heard that the two commands, lock tables and unlock tables , literally know that the function of the former is to lock the table and the latter is to unlock it. But how to use, how to use, not very clear. Today, in a detailed study, we finally figured out the usage of 2 people. The lock tables command locks the table for the current thread. There

Differences between temporal tables and data tables in SQL Server1, how to determine the temporary table and the data table has been generated--how to tell if a temporary table has been created---if exists(Select * fromTempdb.. sysobjectswhereId=object_id('tempdb: #Temp_Student')) begin Print 'temporary table exists'; EndElse begin Print 'No temporary table exists'; End--how to tell if

Optimization of large database tables: Use the tered tables and the tered Index) Two-dimensional tables and two-dimensional indexes are a technology provided by oracle. The basic idea is to share several tables with the same data items that are frequently used together through data blocks). The common fields of each ta

Learn data structures-> linear tables-> introduction to linear tables A linear table is a typical data structure. The basic feature of a linear structure is that the data elements in a linear table are ordered and limited. In a linear structure, there is only one "start data element" and one "last data element", except that the start data element has no direct precursor, And the last data element has no d

Today, the flush tables with read lock command was used to solve Database Synchronization exceptions, so I learned about the lock table by the way. 1. FLUSH TABLES WITH READ LOCK This command is global read lock. After the command is executed, all tables in all databases are locked and read-only. It is generally used for online database backup. At this time, the

Fact tableEach data warehouse contains one or more fact data tables. Fact data tables may contain business sales data, such as data generated by cash registration firms. Fact data tables usually contain a large number of rows. Fact data tables are mainly characterized by digital data (FACTS) that can be summarized to p

Overview of SQL Server database dimension tables and fact tables: Fact table Each data warehouse contains one or more fact tables. Fact tables may contain business sales data, such as cash register transactions The resulting data, the fact table usually contains a large number of rows. The main feature of the fact t

Because temporary tables are used directly to create intermediate tables, the speed is not satisfactory. Therefore, the idea of creating a temporary table as a memory table exists. However, the difference between a memory table and a temporary table is not familiar with it. You need to find the information.Initially, the temporary table exists after it is created. When the connection is disconnected, the te

Mysql lost data. There were 547 tables, and all the data in more than 300 tables were lost. The first 100 tables were normal. in the order of table names, all the tables in front of one table were normal, all the data in the following table disappears. What is the cause? Thank you. Mysql data Mysql lost data. The

MYSQL Tutorial: check the data table and repair the data table MySQL server uses the permission table to control user access to the database. The permission table is stored in the mysql database and initialized by the mysql_install_db script. These permission tables are user, db, table_priv, columns_priv, and host respectively. The following describes the structure and content of these tables: User permiss

Dictionary is an abstract data type used to store data items that can be indexed by key. Basic operations include insertion, search, and deletion. It is a relatively broad concept and does not specify specific implementation, such as what data structure is used to store data items at the underlying layer. Therefore, as long as each data item stored is a pair (Key, value) and can be indexed to this item with key, such a data type can be called dictionary. Both direct-address

SQL Server temporary tableYou can also create a temporary table. Temporary tables are similar to permanent tables, but temporary tables are stored in tempdb. They are automatically deleted when they are no longer used.There are two types of temporary tables: local and global, both of which have different names, visibil

Temporary tablesIn Oracle, a temporary table is "static," which, like a regular datasheet, needs to be created only once, and its structure is valid for the entire period from creation to deletion. In contrast to other types of tables, a temporary table allocates space for the user when the data is actually added to the table, and the allocated space is from the temporary table space. This avoids data contention storage space with persistent objects.T

Explanation 1: Fact tables are data tables combined by a certain field of analysis.The latitude table is a combination of analysis indicators in this field. Interpretation 2: To put it simply;A fact table is a transaction table.A dimension table is a basic table.Used to explain the specific content of the keyword latitude in a fact table. Explanation 3: Fact data tableThe central table in the data

Replicated tables in the primary database Table name Description MSreplication_options The table stores metadata that is used internally for replication. This table is stored in the master database. Replicated tables in the msdb database Table name Description Msagentparameterlist The table contains repl

Some people on the Internet have provided the best optimization ideas: 1. first, extract the records that meet the conditions in the large table to generate a temporary table. 2. then, compare the small temporary table with another small table. Some people on the Internet have provided the best optimization ideas: 1. first, extract the records that meet the conditions in the large table to generate a temporary table. 2. then, compare the small temporary table with another small table. Some

From: http://www.cnblogs.com/songdavid/articles/2371077.html Some interface tables used by EBS sort information AP interface tables: requests involved in ap_invoices_interfaceap_invoice_lines_interface: Import of open interfaces of the payable management system case: Import of shipping AP and fee export AP Po interface table: application: po_requisitions_interface_all request involved: Import Application pr

Some people on the Internet have provided the best optimization ideas: 1. Extract the records that meet the conditions in the large table to generate a temporary table. 2. Associate the small temporary table with another small table. No matter whether the thinking is worth discussing, it is very worthy of recognition to regard the temporary table as a transfer station. Temporary tables are essentially cache representations. Temporary