Can we use multiple database in PHP?

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Can we use multiple database in PHP?

If you want to use multiple MySQL databases in your PHP project then you need to create a separate connection variable for your databases and use variables according to the database on which you are performing an action.

How do you use multiple databases?

Specify Connection

  1. Schema. Within the Schema Builder, you can use the Schema facade with any connection.
  2. Query. Similar to Schema Builder, you can define a connection on the Query Builder: $users = DB::connection(‘mysql2’)->select(…
  3. Eloquent. You can also define which connection to use in your Eloquent models as well!

How can I connect two database in PHP?

Connecting Multiple Databases with PHP MySQLi:

  1. Step-1) Open the Mysql Connection.
  2. Step-2) Select and Retrieve Records from the First Database.
  3. Step-3) Select and Retrieve Records from the Second Database.
  4. Step-4) Closing the Connection.
  5. Step-1) Connect First Database with PDO.
  6. Step-2) Connect the Second Database.
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How can we optimize a DB table?

Optimizing your database

  1. Select your database from the list.
  2. Look at the Overhead column to the far right – if you see any numerical values, those tables can be optimized.
  3. At the bottom of your table list, click the With selected dropdown menu.
  4. From the dropdown menu, select Optimize table.

How hibernate connect to multiple databases dynamically?

You can connect two databases test1 and test2, retrieve data with only one hibernate with some tricks:

  1. hibernate SQLQuery: just add database name with the table “select * from test1.table1”, “select * from test2.table2”
  2. hibernate persistence: using the key schema in the hibernate mapping xml.

How do I link two MySQL databases?

cPanel

  1. Log in to cPanel.
  2. In the Databases section, click the phpMyAdmin icon.
  3. Click the SQL tab at the top.
  4. You will see where it says, Run SQL query/queries on server “localhost”:.
  5. Insert the following code in the text box below, but replace DB1 and DB2 with the database names.
  6. Click the Go button.
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Which technique is used to increase the size of database?

5) Which technique is used to increase the size of database? Replication is used to increase the size of database.

How do I optimize an mssql database?

Let’s look at the top 10 tips for SQL Server performance tuning

  1. USE THE DATABASE ENGINE TUNING ADVISOR.
  2. ANALYZE WAIT STATISTICS.
  3. FIND THE QUERIES CREATING A PROBLEM.
  4. FINE-TUNE THE QUERIES.
  5. GET A STRONGER CPU FOR ENHANCED PERFORMANCE.
  6. LOOK OUT FOR THE INDEXES.
  7. KEEP LOG AND DATA FILES SEPARATE.
  8. TRY NOT TO OVERLOAD SQL SERVER.