SQL in the Real World
... • Host language: A conventional language (e.g., C, Java) that supplies control structures, computational capabilities, interaction with physical devices • SQL: supplies ability to interact with database. • Using the facilities of both: the application program can act as an intermediary between the u ...
... • Host language: A conventional language (e.g., C, Java) that supplies control structures, computational capabilities, interaction with physical devices • SQL: supplies ability to interact with database. • Using the facilities of both: the application program can act as an intermediary between the u ...
ORACLE: PL/SQL What is PL/SQL
... 1- The UNRECOVERABLE keyword speeds up table creation because there is no overhead in generating and logging redo information. 2- Parallelism speeds up the creation of the table. 3- After the table is created, querying the table is also faster because the same degree of ...
... 1- The UNRECOVERABLE keyword speeds up table creation because there is no overhead in generating and logging redo information. 2- Parallelism speeds up the creation of the table. 3- After the table is created, querying the table is also faster because the same degree of ...
Development - Downloads
... purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products re ...
... purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products re ...
Design and Evaluation of Architectures for Commercial Applications
... I/O bandwidth requirements vary with fraction of DB resident in memory completely in-memory run: no special I/O requirements favor more small disks vs. few large ones place all redo logs on a separate disk reduce OS double-buffering ...
... I/O bandwidth requirements vary with fraction of DB resident in memory completely in-memory run: no special I/O requirements favor more small disks vs. few large ones place all redo logs on a separate disk reduce OS double-buffering ...
ppt
... single set-oriented query Set orientation -> fewer calls to database E.g., tune program that computes total salary for each department using a separate SQL query by instead using a single query that computes total salaries for all department at once (using group by) Use stored procedures: avoi ...
... single set-oriented query Set orientation -> fewer calls to database E.g., tune program that computes total salary for each department using a separate SQL query by instead using a single query that computes total salaries for all department at once (using group by) Use stored procedures: avoi ...
Procedure to Setup Microsoft SQL Server 7
... 2. Again, insert the CD containing SQL Server Service Pack2 into the CD Drive Double click the file: SQL70OLAPSP2i.exe ...
... 2. Again, insert the CD containing SQL Server Service Pack2 into the CD Drive Double click the file: SQL70OLAPSP2i.exe ...
presentation source
... Describing Data: Data Models • A data model is a collection of concepts for describing data. • A schema is a description of a particular collection of data, using the a given data model. • The relational model of data is the most widely used model today. – Main concept: relation, basically a table ...
... Describing Data: Data Models • A data model is a collection of concepts for describing data. • A schema is a description of a particular collection of data, using the a given data model. • The relational model of data is the most widely used model today. – Main concept: relation, basically a table ...
CmpE226-DB-L07n
... Structured Query Language – A widely used standard set of commands and syntax for doing things with RDBMSs – Used especially for query and retrieval – Includes commands for defining RDBs, conducting transactions, storing data, etc. – Implemented in all major RDBMSs – SQL does not handle all the prac ...
... Structured Query Language – A widely used standard set of commands and syntax for doing things with RDBMSs – Used especially for query and retrieval – Includes commands for defining RDBs, conducting transactions, storing data, etc. – Implemented in all major RDBMSs – SQL does not handle all the prac ...
Хакери и БД
... are a good tool for validating user input. There are two basic approaches to validation: -disallow troublesome characters; -only allow a small number of required characters. While you can easily disallow a few troublesome characters, such as the hyphen and single quote, this approach is less than op ...
... are a good tool for validating user input. There are two basic approaches to validation: -disallow troublesome characters; -only allow a small number of required characters. While you can easily disallow a few troublesome characters, such as the hyphen and single quote, this approach is less than op ...
DBA_Cheat_Sheet
... Registered Servers: https://www.mssqltips.com/sqlservertip/1996/registering-sqlserver-instances-for-easier-management/ Import and Export Registered Servers: https://www.mssqltips.com/sqlservertip/2015/import-and-export-registered-sqlservers-to-other-machines/ Display Line Numbers in Query Wind ...
... Registered Servers: https://www.mssqltips.com/sqlservertip/1996/registering-sqlserver-instances-for-easier-management/ Import and Export Registered Servers: https://www.mssqltips.com/sqlservertip/2015/import-and-export-registered-sqlservers-to-other-machines/ Display Line Numbers in Query Wind ...
Performance Guidance for SQL Server in
... Azure Infrastructure Services fundamentals This section provides an overview of the Azure Infrastructure Services including some key considerations that can have a direct impact on the performance of your SQL Server workloads. Azure Infrastructure Services lets you access scalable, on-demand infrast ...
... Azure Infrastructure Services fundamentals This section provides an overview of the Azure Infrastructure Services including some key considerations that can have a direct impact on the performance of your SQL Server workloads. Azure Infrastructure Services lets you access scalable, on-demand infrast ...
Oracle to MySQL Migration
... Also, the transfer of large volume of data can complicate error handling, as you now cannot afford to re-run a full migration if just a few tables fail. The project might benefit from tools that allow for bulk insert options, as tools that issue a commit after each row may be no longer be a viable o ...
... Also, the transfer of large volume of data can complicate error handling, as you now cannot afford to re-run a full migration if just a few tables fail. The project might benefit from tools that allow for bulk insert options, as tools that issue a commit after each row may be no longer be a viable o ...
5. SQL Ch5
... statements that are stored within the database. • The procedural code is executed by the DBMS when it is invoked by the end user. • End users can use procedural SQL (PL/SQL) to create: – Triggers – Stored procedures – PL/SQL functions • SQL provides a module language – permits definition of procedur ...
... statements that are stored within the database. • The procedural code is executed by the DBMS when it is invoked by the end user. • End users can use procedural SQL (PL/SQL) to create: – Triggers – Stored procedures – PL/SQL functions • SQL provides a module language – permits definition of procedur ...
Getting Started with Advantage Server
... FPT/.CDX. Although Advantage Server includes robust support for SQL, no knowledge of SQL is required to enable client/server technology in your Xbase++ applications. For years, many Xbase programmers had erroneously equated “client/server” to SQL and assumed that they needed to move to a different p ...
... FPT/.CDX. Although Advantage Server includes robust support for SQL, no knowledge of SQL is required to enable client/server technology in your Xbase++ applications. For years, many Xbase programmers had erroneously equated “client/server” to SQL and assumed that they needed to move to a different p ...
plsql_ch1_2
... Introduction to PL/SQL • PL/SQL is the procedural extension to SQL with design features of programming languages. • Data manipulation and query statements of SQL are included within procedural units of code. ...
... Introduction to PL/SQL • PL/SQL is the procedural extension to SQL with design features of programming languages. • Data manipulation and query statements of SQL are included within procedural units of code. ...
Chapter 17: Parallel Databases
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
Chapter 17: Parallel Databases
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
IMS 3005 Course Introduction - University of Central Florida
... – You take results (including errors!) and display them to the user through your interface • SQL can contain complex procedural code in addition to data manipulation statements ...
... – You take results (including errors!) and display them to the user through your interface • SQL can contain complex procedural code in addition to data manipulation statements ...
DBA Cheat Sheet
... Registered Servers: https://www.mssqltips.com/sqlservertip/1996/registering-sqlserver-instances-for-easier-management/ Import and Export Registered Servers: https://www.mssqltips.com/sqlservertip/2015/import-and-export-registered-sqlservers-to-other-machines/ Display Line Numbers in Query Wind ...
... Registered Servers: https://www.mssqltips.com/sqlservertip/1996/registering-sqlserver-instances-for-easier-management/ Import and Export Registered Servers: https://www.mssqltips.com/sqlservertip/2015/import-and-export-registered-sqlservers-to-other-machines/ Display Line Numbers in Query Wind ...
Chapter 1:
... Entered query is merged with original query that defined the view to create the final query that is ...
... Entered query is merged with original query that defined the view to create the final query that is ...
PL/SQL Programming for .NET Developers
... • Generate dynamically based on application requirements // C# string cmdtxt = "BEGIN " + "OPEN :1 for select * from emp where deptno = 10; " + "OPEN :2 for select * from dept where deptno = 20; " + "INSERT INTO DEPT VALUES (50, ‘IT', ‘SAN FRANCISCO');" + "END;"; ...
... • Generate dynamically based on application requirements // C# string cmdtxt = "BEGIN " + "OPEN :1 for select * from emp where deptno = 10; " + "OPEN :2 for select * from dept where deptno = 20; " + "INSERT INTO DEPT VALUES (50, ‘IT', ‘SAN FRANCISCO');" + "END;"; ...
Introduction to SQL
... The Database Model Reflects the following business rules A customer may generate one or more invoices; each invoice is generated by one customer An invoice contains one or more invoice lines; each invoice line is associated with one invoice Each invoice line references one product; a produc ...
... The Database Model Reflects the following business rules A customer may generate one or more invoices; each invoice is generated by one customer An invoice contains one or more invoice lines; each invoice line is associated with one invoice Each invoice line references one product; a produc ...
A Talk on SQL
... SQL has been touted as providing data independence. This is not as big a selling point to SAS folks - a SAS data set has always protected applications from changes to the underlying files and most carefully written programs are immune to new variables in the data sets they process. SQL has been impl ...
... SQL has been touted as providing data independence. This is not as big a selling point to SAS folks - a SAS data set has always protected applications from changes to the underlying files and most carefully written programs are immune to new variables in the data sets they process. SQL has been impl ...
SQL by Soid Quintero& Ervi Bongso (2/26)
... Structured Query Language (SQL) The ANSI standard language for the definition and manipulation of relational database. Includes data definition language (DDL), statements that specify and modify database schemas. Includes a data manipulation language (DML), statements that manipulate database conte ...
... Structured Query Language (SQL) The ANSI standard language for the definition and manipulation of relational database. Includes data definition language (DDL), statements that specify and modify database schemas. Includes a data manipulation language (DML), statements that manipulate database conte ...
Tandem Computers
Tandem Computers, Inc. was the dominant manufacturer of fault-tolerant computer systems for ATM networks, banks, stock exchanges, telephone switching centers, and other similar commercial transaction processing applications requiring maximum uptime and zero data loss. The company was founded in 1974 and remained independent until 1997. It is now a server division within Hewlett Packard.Tandem's NonStop systems use a number of independent identical processors and redundant storage devices and controllers to provide automatic high-speed ""failover"" in the case of a hardware or software failure. To contain the scope of failures and of corrupted data, these multi-computer systems have no shared central components, not even main memory. Conventional multi-computer systems all use shared memories and work directly on shared data objects. Instead, NonStop processors cooperate by exchanging messages across a reliable fabric, and software takes periodic snapshots for possible rollback of program memory state.Besides handling failures well, this ""shared-nothing"" messaging system design also scales extremely well to the largest commercial workloads. Each doubling of the total number of processors would double system throughput, up to the maximum configuration of 4000 processors. In contrast, the performance of conventional multiprocessor systems is limited by the speed of some shared memory, bus, or switch. Adding more than 4–8 processors that way gives no further system speedup. NonStop systems have more often been bought to meet scaling requirements than for extreme fault tolerance. They compete well against IBM's largest mainframes, despite being built from simpler minicomputer technology.