Alter Table Unique Index Oracle Woodworking Plans

CREATE TABLE WITH CONSTRAINTS - ORACLE - SQL

CREATE TABLE WITH CONSTRAINTS – ORACLE – SQL

Create table, add constraints: primary key constraint, foreign key constraint, check constraint, unique constraint, specifying the table space for index, modifying table, dropping table Oracle 10g…

25 Oracle 10g Sql_18 ALTER TABLE, CREATE INDEX

25 Oracle 10g Sql_18 ALTER TABLE, CREATE INDEX

SQL with Oracle 10g XE - Using ALTER TABLE to ADD and DROP Table Columns

SQL with Oracle 10g XE – Using ALTER TABLE to ADD and DROP Table Columns

In this video I use the ALTER TABLE command to add and delete a new field column from a table. I used the keywords ADD or DROP to make the changes to the table design. The commands I used were:

ALTER TABLE BOOKS
ADD SAMPLE VARCHAR(10);

ALTER TABLE BOOKS
DROP COLUMN S…

Difference Between Delete and Truncate

Difference Between Delete and Truncate

On bigger picture they serve the same purpose but there are many Differences listed with examples
Point Delete Truncate

1. Data Recovery
Delete: Come under the DML Category, we need to commit or Rollback explicitly to make the changes permanent, so we can recover the data by Ro…

SQL with Oracle 10g XE - Using ALTER TABLE to Modify Table Columns

SQL with Oracle 10g XE – Using ALTER TABLE to Modify Table Columns

In this video I use the ALTER TABLE command to modify an existing field column. The command will allow you to change the data types, whether the field can be null, or even the primary key. When using the ALTER TABLE command you would use the keyword MODIFY to make changes to an existing column. Be c…

Oracle Core, 4

Oracle Core, 4

: ( )
:

1. Create table: permanent tables, temporary tables (on commit delete/preserve rows)
2. Physical properties: tablespace, logging, pctfree, pctused, initrans
3. Pctfree pctused
4. Initrans maxtrans
5.Storage clause: initial, next, minextents, maxextents, p…

Oracle SQL Index types with examples Video Tutorial part 4

Oracle SQL Index types with examples Video Tutorial part 4

Oracle SQL Index types with examples. Simple Index, Composite Index, Unique Index, Non Unique Index, Bitmap Index, B-tree Index….

SelectTec Aula N 28 Create Index - Oracle SQL Developer

SelectTec Aula N 28 Create Index – Oracle SQL Developer

create index syntax:

create unique index nome_indice tabela(colula)…

Mysql tutorial for beginners (6/8) : Indexes

Mysql tutorial for beginners (6/8) : Indexes

mysql tutorial for beginners (6/8): Indexes

As things stand, the table students works and can be searched without problem by MySQL until it grows to more than a couple of hundred rows,
At that point, database accesses will get slower and slower with every new row added, because MySQ…

25 Oracle 10g Sql 18 , ALTER TABLE, CREATE INDEX

25 Oracle 10g Sql 18 , ALTER TABLE, CREATE INDEX

Oracle Sql 03 alter table add,modify,drop columns)

Oracle Sql 03 alter table add,modify,drop columns)

SQL Index - Compare a clustered index vs a non clustered index

SQL Index – Compare a clustered index vs a non clustered index

In this video training, we compare SQL indexes – clustered index vs. non clustered index. In SQL server you can have one clustered index whereas you can have many non clustered index is. Using SQL Server Profiler and MS SQL Execution plans, we compare the clustered index and the nonclust…

Oracle Database 12c: Partitioning Improvements with Tom Kyte

Oracle Database 12c: Partitioning Improvements with Tom Kyte

Tom Kyte introduces the new partitioning improvements in Oracle Database 12c, followed by a demo of global index maintenance. For more information:

Asynchronous Global Index Maintenance for Dropping and Truncating Partitions

Changes for Very Large Databases and Partitioning…

Oracle SQL Tutorial - Altering a Table using SQL commands (Theory)

Oracle SQL Tutorial – Altering a Table using SQL commands (Theory)

SQL Tutorial explaining the theory behind making structural changes to a table using an ALTER TABLE command.presented by …

Install Oracle on Local system and Unlock HR Schema

Install Oracle on Local system and Unlock HR Schema

Today, lets see how to install Oracle 11g XE and unlock the HR schema tables and practice our lab exercises on the local system.

Download:

Query:
ALTER USER HR IDENTIFIED BY HR ACCOUNT UNLOCK; …