Database Users and Administrators
... maintaining the DBMS working. He is also responsible for updating the service packs/ hot fixes/ patches to the DBMS servers. Design and implementation: - Designing the database and implementing is also DBA’s responsibility. He should be able to decide proper memory management, file organizations, er ...
... maintaining the DBMS working. He is also responsible for updating the service packs/ hot fixes/ patches to the DBMS servers. Design and implementation: - Designing the database and implementing is also DBA’s responsibility. He should be able to decide proper memory management, file organizations, er ...
Name
... select head –>name, head –>address from departments An expression such as “head–>name” is called a path expression Path expressions help avoid explicit joins If department head were not a reference, a join of departments with people would be required to get at the address Makes expressing th ...
... select head –>name, head –>address from departments An expression such as “head–>name” is called a path expression Path expressions help avoid explicit joins If department head were not a reference, a join of departments with people would be required to get at the address Makes expressing th ...
Probabilistic Data Management
... Need to manage imprecisions in data • Many types: non-matching data values, imprecise queries, inconsistent data, misaligned schemas, etc. The quest to manage imprecisions = major driving force in the database community • Ultimate driver for many research areas: data mining, semistructured data, sch ...
... Need to manage imprecisions in data • Many types: non-matching data values, imprecise queries, inconsistent data, misaligned schemas, etc. The quest to manage imprecisions = major driving force in the database community • Ultimate driver for many research areas: data mining, semistructured data, sch ...
Java Database Connectivity (JDBC)
... by reserving memory (Process Global Area – PGA) and by starting a server process2. During the lifecycle of the session the client can initiate database operations which are forwarded to the DBMS in the form of SQL statements. The SQL statement is processed by the DBMS in several steps. At the proces ...
... by reserving memory (Process Global Area – PGA) and by starting a server process2. During the lifecycle of the session the client can initiate database operations which are forwarded to the DBMS in the form of SQL statements. The SQL statement is processed by the DBMS in several steps. At the proces ...
Document
... – Data can be cached at client even in between transactions – But check that data is up-to-date before it is used (cache coherency) – Check can be done when requesting lock on data item • Lock Caching – Locks can be retained by client system even in between transactions – Transactions can acquire ca ...
... – Data can be cached at client even in between transactions – But check that data is up-to-date before it is used (cache coherency) – Check can be done when requesting lock on data item • Lock Caching – Locks can be retained by client system even in between transactions – Transactions can acquire ca ...
Lecture 9: Users, ER Diagrams - csns
... Database access code from a Java Web app (CSNS). This uses Hibernate, which helps to map relational DBs to objects (again, from John Hurley): ...
... Database access code from a Java Web app (CSNS). This uses Hibernate, which helps to map relational DBs to objects (again, from John Hurley): ...
Database Management Systems 2010/11 -- Chapter 1: Introduction --
... Pure OODBMSs have disappeared. Many relational DBMSs have incorporated object database concepts, leading to a new category called object-relational DBMSs (ORDBMSs). Extended relational systems add further capabilities (e.g. for multimedia data, XML, and other data types) ...
... Pure OODBMSs have disappeared. Many relational DBMSs have incorporated object database concepts, leading to a new category called object-relational DBMSs (ORDBMSs). Extended relational systems add further capabilities (e.g. for multimedia data, XML, and other data types) ...
Aspnet3
... For certain applications it may not be necessary to extract a complete set of records from a database table. For instance, you may wish simply to get a count of the number of records in the table using a SELECT statement with, say, a Count function: SELECT Count(*) FROM Products In this case a data ...
... For certain applications it may not be necessary to extract a complete set of records from a database table. For instance, you may wish simply to get a count of the number of records in the table using a SELECT statement with, say, a Count function: SELECT Count(*) FROM Products In this case a data ...
Bind Variables, Dynamic SQL, and other catastrophes
... employee number – and if this query is going to be executed many times with different parameters, you will flood your database’s memory area with multiple copies of the same statement. Once this occurs, then every new query will have to be hard parsed, as well as possibly (depending on the database ...
... employee number – and if this query is going to be executed many times with different parameters, you will flood your database’s memory area with multiple copies of the same statement. Once this occurs, then every new query will have to be hard parsed, as well as possibly (depending on the database ...
SQL DOM: Compile Time Checking of Dynamic SQL Statements
... between the two goals, we always chose the first goal. One example of the struggle between these two goals occurred during the design of the class that would be used to construct insert SQL statements. For an insert SQL statement to be valid it has to contain a value for every column in the table th ...
... between the two goals, we always chose the first goal. One example of the struggle between these two goals occurred during the design of the class that would be used to construct insert SQL statements. For an insert SQL statement to be valid it has to contain a value for every column in the table th ...
SQL Performance Tuning
... if inserting then v_var1 := :new.table_field; elsif updating then v_var1 := :new.table_field; v_var2 := :old.table_field; elsif deleting then v_va2 := :old.table_field; end if; end; ...
... if inserting then v_var1 := :new.table_field; elsif updating then v_var1 := :new.table_field; v_var2 := :old.table_field; elsif deleting then v_va2 := :old.table_field; end if; end; ...
Conjunctive Queries
... A Special Type of Query: Conjunctive Queries A single Datalog rule with no “Ç,” “:,” “8” can express select, project, and join – a conjunctive query Conjunctive queries are possible to reason about statically (Note that we can write CQ’s in other languages, e.g., SQL!) ...
... A Special Type of Query: Conjunctive Queries A single Datalog rule with no “Ç,” “:,” “8” can express select, project, and join – a conjunctive query Conjunctive queries are possible to reason about statically (Note that we can write CQ’s in other languages, e.g., SQL!) ...
5.02-Queries
... 5.01 discussed and explained how tables are the building blocks for all databases. ► This objective will use tables to create three types of database objects: Queries Forms Reports 5.02 Understand database queries, forms, and reports used in business. ...
... 5.01 discussed and explained how tables are the building blocks for all databases. ► This objective will use tables to create three types of database objects: Queries Forms Reports 5.02 Understand database queries, forms, and reports used in business. ...
Kentico CMS Performance Optimization
... View_Newsmax_Article_Joined inner join custom tables WHERE (##WHERE##) ORDER BY ##ORDERBY## // joining a view of views to another table. ...
... View_Newsmax_Article_Joined inner join custom tables WHERE (##WHERE##) ORDER BY ##ORDERBY## // joining a view of views to another table. ...
Fall 2007 CS 440 Syllabus (Word format)
... c) Analyze major data models including the entity-relationship, the relational, and object-oriented models. d) Explain top-down database planning and bottom-up database design methodologies and processes. e) Design and implement a practical database that meets a specific set of criteria. f) Describe ...
... c) Analyze major data models including the entity-relationship, the relational, and object-oriented models. d) Explain top-down database planning and bottom-up database design methodologies and processes. e) Design and implement a practical database that meets a specific set of criteria. f) Describe ...
Technical Skills
... An active computer scientist who uses all her skills, creativity, leadership and team work to execute new ideas and projects at the best level. Oracle professional with 7 years of experience as Database Administrator, worked on Oracle 11g performing installation, upgrades, migration, tuning, cloning ...
... An active computer scientist who uses all her skills, creativity, leadership and team work to execute new ideas and projects at the best level. Oracle professional with 7 years of experience as Database Administrator, worked on Oracle 11g performing installation, upgrades, migration, tuning, cloning ...
Scaling HTM-Supported Database Transactions to Many Cores
... mainstream CPUs. HTM allows for efficient concurrent, atomic operations, which is also highly desirable in the context of databases. On the other hand, HTM has several limitations that, in general, prevent a one-to-one mapping of database transactions to HTM transactions. In this work, we devise sev ...
... mainstream CPUs. HTM allows for efficient concurrent, atomic operations, which is also highly desirable in the context of databases. On the other hand, HTM has several limitations that, in general, prevent a one-to-one mapping of database transactions to HTM transactions. In this work, we devise sev ...
3. Migration
... 6.10 - Restorative Migration of SQL databases – single or multiple SQL servers ........................................................................ 7 7. Migration Proceedures ...................................................... 7 7.1 - Migration of all in one installation - creation of a repli ...
... 6.10 - Restorative Migration of SQL databases – single or multiple SQL servers ........................................................................ 7 7. Migration Proceedures ...................................................... 7 7.1 - Migration of all in one installation - creation of a repli ...
File - You have to dream before your dreams can come
... Benefits of PL/SQL • Procedural language support : PL/SQL is a development tools not only for data manipulation futures but also provide the conditional checking, looping or branching operations same as like other programming language. • Reduces network traffic : This one is great advantages of PL/ ...
... Benefits of PL/SQL • Procedural language support : PL/SQL is a development tools not only for data manipulation futures but also provide the conditional checking, looping or branching operations same as like other programming language. • Reduces network traffic : This one is great advantages of PL/ ...
Document
... What is an Ambiguous Relationship? An ambiguous relationship is where there are multiple relationship paths between one or more query subjects leaving multiple options for how to write a query. What is a Join and types of Joins? A Join identifies the columns from one table that are used to link to a ...
... What is an Ambiguous Relationship? An ambiguous relationship is where there are multiple relationship paths between one or more query subjects leaving multiple options for how to write a query. What is a Join and types of Joins? A Join identifies the columns from one table that are used to link to a ...
Web-Enabled Decision Support Systems
... DELETE statements are DML statements that delete one or more records from database tables – Specify the deletion criteria using a WHERE clause ...
... DELETE statements are DML statements that delete one or more records from database tables – Specify the deletion criteria using a WHERE clause ...
Create an Electronic Form Solution with DB2 pureXML and Lotus Forms
... in DB2. These queries can be run using query tools or embedded in external applications Reporting with Cognos (1 minute) We can also use business intelligence application like Cognos BI to generate reports from the XML form data that is stored in DB2. The steps for generating reports from XML data a ...
... in DB2. These queries can be run using query tools or embedded in external applications Reporting with Cognos (1 minute) We can also use business intelligence application like Cognos BI to generate reports from the XML form data that is stored in DB2. The steps for generating reports from XML data a ...