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How to identify the type of database file from a data dump?

I have a file that I suspect is a database, but I don't know what kind of database it is (SQLite, Postgres, etc.). How can I infer test if it's a database, and if so, what kind of database it is? If ...
Franck Dernoncourt's user avatar
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1 answer
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How to implement historical data with this EERD?

I am looking for a way to implement historical data with the following EERD (what I have tried, below the image): What have I tried? Temporal tables Didn't work because I use MySQL and it has no ...
user23600793's user avatar
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copying data from database with the same skeleton

I have a database design with the same tables, procedures and all other details on two different servers. Since one of them ran out of traffic, I forwarded the web software project to the other one. I ...
Kadir Çolak's user avatar
-2 votes
2 answers
125 views

Insert data from one table to another

I have a table in which new entries come in every second. The table is just like this: value1 data1 Value2 data2 1 Er 2 Er 3 Er 4 Er Now insert these value in other table as Value data 1 Er 2 Er 3 Er ...
charu gupta's user avatar
1 vote
0 answers
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Power Pivot/Data model issue

Good day, I am facing two blocking points where I would need your insights please. I have downloaded all my sheets in power query and made the necessary transformations, including creating a common ...
Maissa Oueslati's user avatar
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0 answers
55 views

Seeking Clarity on Calculating Tuples in Slotted Page Array with Unspanned Organization

I'm currently grappling with a database administration question and would greatly appreciate some guidance. Here's the scenario: I'm working with a slotted page array organized under the unspanned ...
cricket900's user avatar
1 vote
2 answers
321 views

Should a frequently-growing log file be stored as a table or a blob in the database?

I'm an undergrad and haven't worked with any actually database yet so my apologies if I misunderstand/misuse any terms. My question comes from an assignment of mine, but this is my attempt at learning ...
Cydennn's user avatar
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1 answer
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Correct way of storing the "reach profile" of an object

We've got to store information about a diversity of mechanical "arms" that have a certain reach profile. We need to store the information about what kind of reach profile the arm has. Since ...
Ambidex's user avatar
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2 answers
576 views

Compare two tables for discrepencies

I am trying to compare two tables in two separate databases (same instance) for a new data extract The tables have around 4 millions rows and due to how they've been extracted are not in the same ...
QueryQuirk's user avatar
1 vote
1 answer
99 views

MySql count using and still show all data even using where clause

Good Afternoon, How i can show all data when using count and where clause in MySql. In my case, I have master data like pict at below. and i using this query to show count the data. SELECT body, ...
epm.007's user avatar
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Two Database Instances, need to share table data

Background Two sites, both WordPress; one is public-facing, and the second is private with restrictive access. The public-facing site has a form on it, but I need to be able to access the information ...
N. Kendrick's user avatar
-1 votes
1 answer
846 views

Aborted mysql connection no one can solve - need a true expert

I have had several high level db admins look at my issue here and not a single one knows what the issue is. I am constantly getting mysql error log spammed with [Warning] Aborted connection 1650610 to ...
zddshp's user avatar
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1 answer
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Query on table A to find the number of overlapping jobs for each job

Table A: job start_time end_time A 1:30 2:30 B 1:45 2:15 C 2:45 3:45 D 0:50 2:50 Table B: job start_time end_time A 1:30 2:30 B 1:45 2:15 C 2:45 3:45 D 0:50 2:50 Sample output: job start_time end_time ...
chandra's user avatar
0 votes
1 answer
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Does the order in which vms are shutdown impact the postgresql replication environment?

I have the following environment: A postgres server (rhel8, postgresql v14) as master and another as standby. I need to do a maintenance task on the infrastructure and for this reason both vms need to ...
miguel ramires's user avatar
3 votes
2 answers
1k views

Data retention in Mariadb

I want to retain data for 90 days only for all 15 tables in my Mariadb database. Current db size is 60 GB. What are the options available for performing the same.
Cassandra Thrift's user avatar

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