1.NoSQL
a) Refers to some non-relational databases. High read and write performance, storage will expire, and data will be stored in memory
b) Classification
2.Redis
a) High
Category: Database
The database is a warehouse that organizes, stores and manages data according to the data structure. It was created more than 60 years ago. With the development of information technology and the market, especially after the 1990s, data management is no longer just It is to store and manage data, and transform it into various data management methods required by users. There are many types of databases, from the simplest tables that store various data to large-scale database systems that can store massive amounts of data. They have been widely used in all aspects.
PowerDesigner Assistance () Problem of SQL Server
The following are some problems that may occur during the operation, some of which have been mentioned in the above operation.
Communication link failure or general network error
The re
NOSQL – Accessing CouchDB Futon via HTTPS
I have a problem accessing the futon interface when using nginx proxy.
When using http protocol, this configuration works fine, but when I try to use
https, I keep getting no_db_file errors (but
PostgreSQL – PGADMIN Display Type [] But not type
I created an ENUM type in PostgreSQL tribool. I created a table column with tribool type. Now I am writing a function with tribool type parameters. However, pgAdmin is only in the drop-down list Tr
NOSQL application essay contest, win iPhone6 and Mars!
Big data contains big profits. For some companies with a huge amount of data, the use of highly scalable non-relational databases has often surpassed relational databases, and this new type of data
PostgreSQL – String Sorting Sequence (LC_COLLATE and LC_CTYPE)
Obviously, since version 8.4, PostgreSQL allows each database to use a different locale.
So I went to the document to read about the locale (http://www. postgresql .org/docs/8.4/static/locale.html)
PostgreSQL – How to imitate the Postgres foreign key into the partition table
I have a partitioned table (call it A) where a serial primary key is referenced by another table (call it B). I know I can’t actually go from one to the other One creates a foreign key (because I d
PostgreSQL – How to trigger columns in another table?
So I am adding the last updated database time for my application server. Our idea is to apply the record update to the time of one of our trips, and then the application can send it to get Request
Day41 – numeric type, integrity constraint
day41 Numeric type Integer type
mysql> create table t1(id tinyint); # The default is signed, that is, there is a sign before the number Unsigned setting mysql> create table t1(id tinyint uns
Nosql: MongoDB or BigTable is not always “available”
Read Nathan Hurst’s Visual Guide to NoSQL Systems, he includes the CAP triangle:
>Consistency
>Availability
> Partition tolerance
SQL Server is an AC system, and MongoDB is a CP system.