Interacting with the Oracle Server
... • Syntax errors can arise because PL/SQL checks the database first or a column in the table • The names of local variables and formal parameters take precedence over the names of ...
... • Syntax errors can arise because PL/SQL checks the database first or a column in the table • The names of local variables and formal parameters take precedence over the names of ...
Triggers
... Whenever some details for an employee are deleted or updated, both the previous and new details are recorded in an audit table to allow tracing the history of changes. An insert operation cannot be recorded with this trigger as old.empno has no value. ...
... Whenever some details for an employee are deleted or updated, both the previous and new details are recorded in an audit table to allow tracing the history of changes. An insert operation cannot be recorded with this trigger as old.empno has no value. ...
notes #5
... Divide Requires user of single-column table and two-column table A value in the unshared column must be associated with each value in the single-column table ...
... Divide Requires user of single-column table and two-column table A value in the unshared column must be associated with each value in the single-column table ...
Venn Diagrams
... Query Mechanism: Pick a Supplier. Look at every row in the Supplies table and if you fail to see that Supplier even once then consider that Supplier as part of the answer set. Then move on to a new Supplier. So instead of selecting members of the answer set looking at rows one at a time (which is wh ...
... Query Mechanism: Pick a Supplier. Look at every row in the Supplies table and if you fail to see that Supplier even once then consider that Supplier as part of the answer set. Then move on to a new Supplier. So instead of selecting members of the answer set looking at rows one at a time (which is wh ...
A Realistic Data Cleansing and Preparation Project
... Gorgone et al., 2006). It is also an integral part of the wellknown Extraction, Transformation, and Loading (ETL) process that is frequently covered in data warehousing courses (Rahm and Do, 2000). Using highly simplified, clean and well-defined common domain ‘toy’ datasets for database courses has ...
... Gorgone et al., 2006). It is also an integral part of the wellknown Extraction, Transformation, and Loading (ETL) process that is frequently covered in data warehousing courses (Rahm and Do, 2000). Using highly simplified, clean and well-defined common domain ‘toy’ datasets for database courses has ...
BUILDING BLOCKS OF DATAWAREHOUSE G.Lakshmi Priya
... transactional data from the systems of record, analyzes warehouse data, and in near‐real‐time relays business rules to the data warehouse and systems of record so that immediate actions can be taken in repsonse to business events. ...
... transactional data from the systems of record, analyzes warehouse data, and in near‐real‐time relays business rules to the data warehouse and systems of record so that immediate actions can be taken in repsonse to business events. ...
distributed database architecture and database link
... Some DBMS like Oracle have a way to communicate each other This communication can be built by means database link A database link is a pointer that defines a oneway communication path from an Oracle Database server to another database server The link pointer is actually defined as an entry in ...
... Some DBMS like Oracle have a way to communicate each other This communication can be built by means database link A database link is a pointer that defines a oneway communication path from an Oracle Database server to another database server The link pointer is actually defined as an entry in ...
Main challenges in XML/Relational mapping
... We can alter the database schema by adding an extra column to table mapped from addressbook element to support the the new information – This solution can’t be however applied if we don’t know the relation between person and summercottage is 1:1. We might get documents containing persons that have m ...
... We can alter the database schema by adding an extra column to table mapped from addressbook element to support the the new information – This solution can’t be however applied if we don’t know the relation between person and summercottage is 1:1. We might get documents containing persons that have m ...
Testing Temporal Data Validity in Oracle 12c using Valid Time
... and project management; and scientific applications such as weather forecasting [3]. The above listed class of applications depends on temporal databases, which records data with reference of time. Uniqueness of information is represented by time element. Majority of large scale corporations and ent ...
... and project management; and scientific applications such as weather forecasting [3]. The above listed class of applications depends on temporal databases, which records data with reference of time. Uniqueness of information is represented by time element. Majority of large scale corporations and ent ...
Staroffice Base.pdf
... Database software provides a powerful set of tools for entering and updating information, deleting information, sorting data, searching for specific data, and creating reports. Base is the StarOffice database application. Base technically creates databases referred to as “relational databases.” A re ...
... Database software provides a powerful set of tools for entering and updating information, deleting information, sorting data, searching for specific data, and creating reports. Base is the StarOffice database application. Base technically creates databases referred to as “relational databases.” A re ...
ppt - UMass Boston Computer Science
... memory addresses, a short-lived phenomenon So long-lived objects (could be years…) have to be identified this way, it’s not the database’s fault ...
... memory addresses, a short-lived phenomenon So long-lived objects (could be years…) have to be identified this way, it’s not the database’s fault ...
SQL Server DB Design Guidelines
... Use the minimum possible number of select statements to accomplish any lookup or modification. For this purpose sub-queries count as separate select statements. For scalable applications you have to stay stateless. Do -not- use server side cursors, or components that create server side cursors, at a ...
... Use the minimum possible number of select statements to accomplish any lookup or modification. For this purpose sub-queries count as separate select statements. For scalable applications you have to stay stateless. Do -not- use server side cursors, or components that create server side cursors, at a ...
A Review on Partitioning Techniques in Database
... „Divide and conquer‟ rule is used to reduce the complexity which results in increasing the performance of the database. Near uniform range partition (NURP) approach [4] is based on range partitioning. Traditionally uniform range partitioning algorithm were used for partitioning the tables but to spe ...
... „Divide and conquer‟ rule is used to reduce the complexity which results in increasing the performance of the database. Near uniform range partition (NURP) approach [4] is based on range partitioning. Traditionally uniform range partitioning algorithm were used for partitioning the tables but to spe ...
Creating Databases
... – Governs the size of the large portion of the SGA and can have profound effect on performance – Size of each buffer is determined by DB_BLOCK_SIZE ...
... – Governs the size of the large portion of the SGA and can have profound effect on performance – Size of each buffer is determined by DB_BLOCK_SIZE ...
DATA-INTENSIVE COMPUTING IN SQL WITH GPUS 10/7/2010
... SQLCLR procedure in C# Fills a shared-memory buffer with a SQL result set Signals the out-of-process server and waits for a response Returns data from the IPC buffer to the database server ...
... SQLCLR procedure in C# Fills a shared-memory buffer with a SQL result set Signals the out-of-process server and waits for a response Returns data from the IPC buffer to the database server ...
Database Query Monitor Settings
... Database Counter, Database Query, DB2 8.x and 9.x, Technology Database Integration, and so forth) can share and reuse database connections in a connection pool. ...
... Database Counter, Database Query, DB2 8.x and 9.x, Technology Database Integration, and so forth) can share and reuse database connections in a connection pool. ...
Partition Maintenance Effects
... In this example, a single table is created, but contains three physical segments. Indexes need to be created so that they can access all of the tables segments. This statement will create a NON-PREFIXED LOCAL index. LOCAL indicates that THREE separate indexes are created. NON-PREFIXED indicates that ...
... In this example, a single table is created, but contains three physical segments. Indexes need to be created so that they can access all of the tables segments. This statement will create a NON-PREFIXED LOCAL index. LOCAL indicates that THREE separate indexes are created. NON-PREFIXED indicates that ...
Fuzzy Key Linkage: Robust Data Mining Methods for Real Databases
... data tables and subvert database integrity, they remain remarkably vulnerable to other types of errors. Most obvious of all, linkage of an insert or update transaction to a database fails whenever the search key in the transaction fails to match bit-by-bit the target key in the database. If a transa ...
... data tables and subvert database integrity, they remain remarkably vulnerable to other types of errors. Most obvious of all, linkage of an insert or update transaction to a database fails whenever the search key in the transaction fails to match bit-by-bit the target key in the database. If a transa ...
The database development life cycle
... Before we consider the development method in more detail let's discuss why we need to take a formal approach to database development. After all, it is quite simple to use structured query language (SQL) CREATE TABLE statements to define tables, or to use the facilities of a database tool to define t ...
... Before we consider the development method in more detail let's discuss why we need to take a formal approach to database development. After all, it is quite simple to use structured query language (SQL) CREATE TABLE statements to define tables, or to use the facilities of a database tool to define t ...
October 10, 2015
... Upgrading this server to the latest SQL Database Update is permanent and irreversible. To confirm the upgrade, type the name of the server ‘pluto' below. The duration of upgrade ranges from several hours to days depending on the size, edition and number of databases in the server. During this time a ...
... Upgrading this server to the latest SQL Database Update is permanent and irreversible. To confirm the upgrade, type the name of the server ‘pluto' below. The duration of upgrade ranges from several hours to days depending on the size, edition and number of databases in the server. During this time a ...
Introduction to Decision Support, Data Warehousing, Business
... What is a Decision Support Workload? The basis of Decision Support Systems is the ability to process complex ad-hoc queries on large volumes of data. In contrast to a transactional workload the focus is upon reading as opposed to modifying data and therefore requires a distinct approach. The ability ...
... What is a Decision Support Workload? The basis of Decision Support Systems is the ability to process complex ad-hoc queries on large volumes of data. In contrast to a transactional workload the focus is upon reading as opposed to modifying data and therefore requires a distinct approach. The ability ...
Chpt Slides
... A computed field is a calculation that a DBMS performs during processing and temporarily stores in a memory location Uppercase and lowercase are not always treated the same Case sensitive database ...
... A computed field is a calculation that a DBMS performs during processing and temporarily stores in a memory location Uppercase and lowercase are not always treated the same Case sensitive database ...
