MongoDB

1. Through the Java based bean metadata@Configuration Public class AppConfig {publicthrows unknownhostexceptioin {returnnew Mongo ("localhost");}}The above method contains exception handling, which is not what we want.Therefore, should try to use

Again to the weekend ~ ~ Upstairs in the decoration!! Can't sleep anymore ... You know!Simply tidy up the idea to do an improved version of the operation and maintenance of automation tools, hoping to achieve: Control initialization of the

New appearing in the MongoDB2.2.Aggregation pipeline data aggregation framework based on conceptual modeling of data processing pipelines. The document enters a multi-stage pipeline that translates the document into aggregated results.The

MongoDB vs. mysql command comparisonThe traditional relational database is usually composed of three hierarchical concepts of database, table, record, and MongoDB is made up of database, collection (collection), Document object composed of three

This blog post is translated from:http://blog.mongodb.org/post/87200945828/6-rules-of-thumb-for-mongodb-schema-design-part-1?mkt_tok= 3rkmmjwwff9wsronsq7ldu%2fhmjteu5z14uusukgxhokz2efye%2blihetpodcmtcvnm7zydbceejhqyqjxpr3fldcn0tjurhtrcw%3d%3dNote:

--Backup1. Back up to the default folderD:\mongodb\bin is the installation directory of MongoDBMONGODUMP-D is the BACKUP DATABASE commandTestDB database nameThe backed up database is in the Dump folder in the MongoDB installation directory2. Back up

On a talk about MongoDB installation and management, which involves a number of concepts, data structure and some API calls, do not know it's okay, actually very simple, this will be a brief introduction.1. DocumentationThe document is the core

this blog in the most concise way to record the blogger in the process of tossing mongodb drops, including the download MongoDB, configuration environment variables, how to start the MongoDB server, how to connect MongoDB servers, and how to connect

First, MongoDB installation configuration 1, get the latest version:wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.0.2.tgz2, decompression can be performedtar zxvf mongodb-linux-x86_64-2.0.2.tgztar zxvf mongodb-linux-x86_64-2.0.2.tgzcd /

As with databases, group is often used for statistics. MongoDB Group also has many restrictions, such as: The return result set can not exceed 16M, the group operation will not handle more than 10,000 unique keys, as if the index is not available

To migrate data from the mainframe to DB2 UDB on the AIX platform, the process is usually as follows: log on to the mainframe, extract data to a file, and ftp file to the AIX machine, then load the data to DB2 UDB. This requires two different

XML is a flexible language. Users can tag their own tags to define their data types. In these tags, users can define their own principles or attribute names. In this way, as long as an XML file is obtained, another user who has no knowledge of this

The following article describes how to create database partitions and related commands on the DB2 database. If you are curious about the database partitions and commands involved in the DB2 database, the following articles will unveil its mysteries.

This article mainly describes the DB2 tablespace. In order to better describe the DB2 tablespace, we will analyze it in depth by using examples, we all know that tablespaces are the logical layers between databases and tables stored in the database.

Today we are going to discuss with you the correct operation solution for DB2 to Improve the Performance of IMPORT commands. I saw the correct operation solution for DB2 to Improve the Performance of IMPORT commands on the relevant website two days

The following articles mainly describe the detailed analysis of the DB2 Capture program in expert Q & A. the DB2 Capture program is a very critical application, especially in the Database Replication solution. The main function of this program is to

The following articles mainly describe how DB2 9 opens the door to XML, on a reputable website, I found a document about how DB2 9 opened the door to XML for you to share. The following is a detailed description of the article. XMLXML DB2 9 provides

The following articles mainly describe the actual database recovery operations of DB2 Based on logs and full backup files, the following is a description of the actual operations performed by DB2 to recover the Database Based on logs and full backup

The simplest command for offline DB2 backup can be: db2 backup db sample to c: \ db2bak, but which of the following is so simple during the actual regular backup, I have compiled scripts for timed offline backup in UNIX/Linux and Windows. very

DB2 requires libaio. so library to support asynchronous IO (AIO) on the linux platform ). on x86, x86-64 and PPC platforms, the minimum requirement is version 0.3.96, and on IA64 and zSeries platforms the minimum requirement is version 0.3.98-2.1.