MongoDB

Client Support for MongoDB As a very mature NoSQL database, MONGDB support for a variety of programming languages has been very perfect, and now support the major mainstream programming languages include:1,mongo Shell2,python3,java4,c#5,node.js6,c++

Spring Boot series (eight) using the MongoDB database in spring boot This article describes the use of the MongoDB database in spring boot, which requires a complete video tutorial of Springboot, click here. MongoDB is an open source NoSQL

Problem: Different countries, the use of different time zones, and server code in the country, across time zone date, based on the date query, no data queryThe 1.mongodb stored new date () is the UTC time, which is the time of the 0 time zone, world

MongoDB Database Introduction Characteristics For collection Storage Rich query Statements Replication set mechanism Support for file storage Mode freedom Multilevel index Easy Horizontal

When we delete a document or collection from MongoDB, MongoDB does not release the disk space that is already occupied, and it maintains a data file that has occupied disk space, although there may be a large and small list of empty records in the

How we want to delete a collection can take the db.test.drop () Way, in fact, behind this, this function is running the drop command. The same effect can be achieved with RunCommand. Let's start by creating a new collection to use as a test:> Use

Livingmongo is a MongoDB database GUI operating system that supports data,,,,, 字段的修改 数据搜索 集合的分类 索引管理 空间统计 慢查询 etc.Demo Address: http://living-mongo.kupposhadow.comUsage Description: Open source MongoDB

Developers who use MongoDB should have heard of the orphan document (orphaned documents), which smelled silence and tears. This article is based on MongoDB3.0 to see how to produce a orphaned document, requires MongoDB operation mode needs to be

Installing a 32-bit mongodb on a 32-bit centos, which is more troublesome than installing a 64-bit MongoDB on a 64-bit CentOS, now logs the installation process as follows:My 32-bit Centos6.4 is newly built. The steps for installing MongoDB are as

$mongodb = new Mongo ();$connection = new Mongo ("$dburl: $port"); Connect to a remote host (default port)$mydb = $mongodb->mydb; Creating a database implicitly MyDB$mydb = $mongodb->selectdb ("MyDB"); Directly select a database that already

When reading the MongoDB GFS document, I learned how to store physical files (including large files. In order to deepen your impression, I wrote an example of uploading files to Mongodb. Of course, since it is stored in the document database, you

DB2 supports Incremental Backup (Incremental Backup) and Delta Backup (Delta Backup. incremental backup is equivalent to a differential backup in Oracle, that is, after a full backup, all the changes since the full backup are backed up for each

The following articles mainly introduce the offline and online full backup of DB2 and the actual operation steps of Incremental backup and recovery, the following describes the offline and online full backup of DB2 and the actual operation steps of

The following article describes how to export LOB data using the DB2 table operation technique. If you are interested in the correct operation procedure of exporting LOB data using the DB2 table operation technique, you can click to view the

This article mainly describes the IBM DB2 data replication and migration methods. The following methods have been tested in the Environment IBM x346, 3.2G × 2, 4G, RAID 1, in DB2 V8.2.4, Win2000 Adv Server, and DMS tablespaces, the data load speed

This article mainly tells you about the correct use scheme of IBM DB2 Catalog and the analysis of its actual operation scheme. In actual operation, I have been listening to others to let the database catalog on the Server go down, at first, I couldn'

The following articles mainly describe the error message SQL0818 when you correctly install IBM DB2 Content Manager V83. The following is a detailed description of the article, I hope you will have a better understanding of it after

Prior to data import, the DB2 database system generally checks the format of external files carefully. If the format of the external file does not meet certain mandatory requirements of the database, the DB2 database will refuse to import data. This

When you use the restore command to restore a database, the command line shows that the database is restored successfully,   C: Documents and SettingsAdministrator> db2 restore database XXX from "D: DB2" Taken at 20110515133036 on "d:" dbpath on "D:

Mongodb fuzzy query tutorial, mongodb fuzzy queryUse the RockMongo client tool for fuzzy search {"Content": "$ regex": "123456 "}Fuzzy search in other cases Query contains XXX {Name:/xxx /} Query starts with XXX {Name:/^ xxx /} Query ends with