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Tag: database

How to store video in the PostgreSQL database?

I store image files (such as jpg, png) in a PostgreSQL database. I found information on how to do that here.

Similarly, I want to store videos in a PostgreSQL database. I searched on the Inte

September 21, 2021By Simo Postgresql database, How to, Medium, PostgreSQL, storage, VideoLeave a Comment

In-depth analysis of NOSQL database distributed algorithms

Abstract: Although the NoSQL movement did not bring fundamentals to distributed data processing Technological changes, but still triggered overwhelming research and practice on various protocols an

September 21, 2021By Simo Nosql Algorithm, analysis, database, distributed, in-depth, NOSQLLeave a Comment

PowerDesigner can’t do database conversion

You need to select the database before creating a table with the powerDesinger tool. After determining the database type and version, you can’t Do database conversion again, unless you re-create a

September 21, 2021By Simo Power Designer conversion, database, done, PowerDesigner, UnableLeave a Comment

PowerDesigner does not have a Database menu

powerdesigner will only show the database menu when the physical model PDM is selected. You need to double-click pdm to show the database

September 21, 2021By Simo Power Designer database, menu, no, PowerDesignerLeave a Comment

PostgreSQL – How to specify different column types according to the database type of Haskell GROUNDHOG?

Using the Groundhog library in Haskell, I want to implement a column type that uses “uuid” when the backend is Postgresql, otherwise just use “varchar” for any other backends. Although this should

September 21, 2021By Simo Postgresql Baskell, Column, database, Different, Groundhog, How, PostgreSQL, Specify, typeLeave a Comment

PostgreSQL Install and create users and create a database

One. Installation You can refer to the postgresql official website installation tutorial: https://www.postgresql.org/download/linux/redhat/

Centos 6 install postgresql 10

Add RPM:

September 21, 2021By Simo Postgresql creation, database, installation, PostgreSQL, userLeave a Comment

PostgreSQL-9.1 – PgAdmin III does not respond when trying to recover the database

I am trying to restore the database (via a backup file), I am using PgAdmin III (Postgresql 9.1).
After selecting the backup file, a window indicates that pg_restore.exe is running, and then PgAdm

September 21, 2021By Simo Postgresql 9.1, database, III, no, PGADMIN, PostgreSQL, recovery, response, tryLeave a Comment

NOSQL – How to build a real world relationship in a chart database (such as NEO4J)?

I have a general question about modeling in a graph database, and I can’t seem to surround my head.

How do you model this type of relationship: “Newton invented calculus”?

In simple gra

September 21, 2021By Simo Nosql building, chart, database, How, NEO, Neo4J, NOSQL, real, relationship, worldLeave a Comment

Why is the key value to NOSQL DB faster than a traditional relational database

I have suggested that I investigate the Key/Value data system to replace the relational database I have been using.

What I don’t know much about is how to improve query efficiency. From my un

September 21, 2021By Simo Nosql correct, database, DB, faster, key value, NOSQL, relationship, tradition, whyLeave a Comment

Retrieve the PHP array keys and values ​​from the PostgreSQL function parameters for database updates

I am trying to send a set of key-value pairs to a postgresql function as a parameter. The structure of the array is as follows –

array( 10) {
[“OWNER”]=> string(3) “ERP”
[“SOURCE”]=> strin

September 21, 2021By Simo Postgresql Arrays, database, function, keys, Medium, parameters, PHP, PostgreSQL, procedures, retrieval, Update, valuesLeave a Comment

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