Normalization
... the database design process About the normal forms 1NF, 2NF, 3NF, BCNF, and 4NF How normal forms can be transformed from lower normal forms to higher normal forms That normalization and ER modeling are used concurrently to produce a good database design That some situations require denormalization t ...
... the database design process About the normal forms 1NF, 2NF, 3NF, BCNF, and 4NF How normal forms can be transformed from lower normal forms to higher normal forms That normalization and ER modeling are used concurrently to produce a good database design That some situations require denormalization t ...
Essential Database Maintenance Essential Database Maintenance
... Log File Considerations (2) Pre‐allocate the log to an appropriate size What is ‘appropriate’? Depends on your workload, recovery model, log backup schedule, HA technologies ...
... Log File Considerations (2) Pre‐allocate the log to an appropriate size What is ‘appropriate’? Depends on your workload, recovery model, log backup schedule, HA technologies ...
A Revolutionary Paradigm
... data management market early. More than a decade before object databases were even thought of, the relational theory of data proposed by Dr. E. F. Codd found its way into commercial relational database products. In the mid-80’s an almost religious conviction in some parts of the IT industry held tha ...
... data management market early. More than a decade before object databases were even thought of, the relational theory of data proposed by Dr. E. F. Codd found its way into commercial relational database products. In the mid-80’s an almost religious conviction in some parts of the IT industry held tha ...
CS352 Lecture - Commercial Query Languages: SQL, QBE last
... has undergone a number of revisions - each of which is considerably more complex than its predecessor. 1. The first ANSI standard was 1986. This was revised in 1989 to yield what is now known as SQL 89 - which many commercial products implemented. (The SQL 89 standard is 120 pp.,) 2. A more recent s ...
... has undergone a number of revisions - each of which is considerably more complex than its predecessor. 1. The first ANSI standard was 1986. This was revised in 1989 to yield what is now known as SQL 89 - which many commercial products implemented. (The SQL 89 standard is 120 pp.,) 2. A more recent s ...
An Introduction to Database Access on the Web
... SQL Server is very popular Similar functionality to Access Many more advanced features e.g. stored procedures, triggers SQL suitable for larger scale e-commerce i.e 1000’s simultaneous users Well worth being familiar with it! ...
... SQL Server is very popular Similar functionality to Access Many more advanced features e.g. stored procedures, triggers SQL suitable for larger scale e-commerce i.e 1000’s simultaneous users Well worth being familiar with it! ...
Chapter 3
... • Orderly arrangement to logically access rows in a table • Index key – Index’s reference point – Points to data location identified by the key ...
... • Orderly arrangement to logically access rows in a table • Index key – Index’s reference point – Points to data location identified by the key ...
CHAP11
... 3 Global optimization • Order in which to execute query fragments. • Data movement between sites. • Where parts of the query will be executed. Copyright © 1999 Addison Wesley Longman, Inc. ...
... 3 Global optimization • Order in which to execute query fragments. • Data movement between sites. • Where parts of the query will be executed. Copyright © 1999 Addison Wesley Longman, Inc. ...
GIDS Data Elements Diagram
... Instruction Guide For Creating a Data Elements Diagram Using SQL Server ...
... Instruction Guide For Creating a Data Elements Diagram Using SQL Server ...
Document
... – An equi-join in which one of the duplicate columns is eliminated in the result table – Most commonly used form of the join ...
... – An equi-join in which one of the duplicate columns is eliminated in the result table – Most commonly used form of the join ...
Detailed SUCRA Brochure
... Given the proliferation of HR/Payroll vendors in the market, combined with the wide range of available Database Management Systems, it is clear that developing a generic or universal solution to the problem of HR/Payroll Compliance Reporting is extremely challenging. In fact, to date, no such Univer ...
... Given the proliferation of HR/Payroll vendors in the market, combined with the wide range of available Database Management Systems, it is clear that developing a generic or universal solution to the problem of HR/Payroll Compliance Reporting is extremely challenging. In fact, to date, no such Univer ...
Early Experience Prototyping a Science Data Server for
... by a researcher Server Sets are maintained on behalf of all researchers in the collaboration Accessible to all researchers Set change policy decisions determined by the server (administrator) on behalf of the collaboration Researcher Sets are maintained by a specific researcher or small subs ...
... by a researcher Server Sets are maintained on behalf of all researchers in the collaboration Accessible to all researchers Set change policy decisions determined by the server (administrator) on behalf of the collaboration Researcher Sets are maintained by a specific researcher or small subs ...
Architecting Data Management: 7 Principles using SAS(R), DataFlux(R) and SQL
... accesses different databases for the source and results data. The source data usually points to the ETL environment at the same level. Thus, as the ETL developers add a new table at their DEV database, we can point our DataFlux jobs at DEV to read that new table. DataFlux developers use local enviro ...
... accesses different databases for the source and results data. The source data usually points to the ETL environment at the same level. Thus, as the ETL developers add a new table at their DEV database, we can point our DataFlux jobs at DEV to read that new table. DataFlux developers use local enviro ...
No Slide Title
... because file access is dependent on a file's data characteristics. • Therefore, any time the file data characteristics are changed, the programs that access the data within those files must be modified. ...
... because file access is dependent on a file's data characteristics. • Therefore, any time the file data characteristics are changed, the programs that access the data within those files must be modified. ...
Keywords: Database, Deadlock, Distributed
... A Database is systematically organized or structured repository of indexed information that allows easy retrieval, updating, analysis, and output of data. Each database may involve different database management systems and different architectures that distribute the execution of transactions [1]. A ...
... A Database is systematically organized or structured repository of indexed information that allows easy retrieval, updating, analysis, and output of data. Each database may involve different database management systems and different architectures that distribute the execution of transactions [1]. A ...
Recommended Solutions for SCR745
... outages, unplanned or planned. This option will provide 99.99% availability for the NAESB proxy servers. *Cluster: A group of servers that are typically on different physical machines and have the same applications configured within them, but operate as a single logical server. ...
... outages, unplanned or planned. This option will provide 99.99% availability for the NAESB proxy servers. *Cluster: A group of servers that are typically on different physical machines and have the same applications configured within them, but operate as a single logical server. ...
MANAGING
... Ans: Catalog tables are tables that comprise the data dictionary. The catalog tables that are managed by DBMS are used to process queries, authorize users, check integrity constraints, and perform other database processing. Every object that can be defined in SQL requires one or more catalog tables. ...
... Ans: Catalog tables are tables that comprise the data dictionary. The catalog tables that are managed by DBMS are used to process queries, authorize users, check integrity constraints, and perform other database processing. Every object that can be defined in SQL requires one or more catalog tables. ...
Chapter 3: Organizing Data and Information
... • Hierarchy of data: bits, characters, fields, records, files, and databases • An entity is a generalized class of things (objects) for which data is collected, stored, and maintained • Attribute: characteristic of an entity • Data model: diagram of entities and relationships • Relational model: des ...
... • Hierarchy of data: bits, characters, fields, records, files, and databases • An entity is a generalized class of things (objects) for which data is collected, stored, and maintained • Attribute: characteristic of an entity • Data model: diagram of entities and relationships • Relational model: des ...
Distributed Architecture of Oracle Database In
... Figure 3. A 3-column Oracle RDBMS table in both row-major and in-memory columnar formats. Scans against the column store are optimized using vector processing (SIMD) instructions [11] which can process multiple operands in a single CPU instruction. For instance, finding the occurrences of a value in ...
... Figure 3. A 3-column Oracle RDBMS table in both row-major and in-memory columnar formats. Scans against the column store are optimized using vector processing (SIMD) instructions [11] which can process multiple operands in a single CPU instruction. For instance, finding the occurrences of a value in ...
What`s Wrong with ER Modeling
... • No join dependencies, i.e., a relation can be reconstructed without loss of information by joining some of its projections (5NF). • No more than one table with the same key (“minimal”). • No transitive dependencies across tables (“optimal”). NOTE: number order is artificial, i.e., there is no nece ...
... • No join dependencies, i.e., a relation can be reconstructed without loss of information by joining some of its projections (5NF). • No more than one table with the same key (“minimal”). • No transitive dependencies across tables (“optimal”). NOTE: number order is artificial, i.e., there is no nece ...
Chapter 7
... Creating and Managing Tables Now that you understand that the structure of a table is defined by its columns and that each column in a table has a datatype, it's time to learn the basics of creating and managing the structure of tables in an Oracle database. The following practice exercises introduc ...
... Creating and Managing Tables Now that you understand that the structure of a table is defined by its columns and that each column in a table has a datatype, it's time to learn the basics of creating and managing the structure of tables in an Oracle database. The following practice exercises introduc ...
Table Design View - University of St Andrews
... data in related tables. In this way we organise the data in a way that removes the duplication of data. If the schema is correctly designed we can combine data in related tables or queries when we need to use it, rather than having to store it repeatedly. This will greatly reduce the workload when e ...
... data in related tables. In this way we organise the data in a way that removes the duplication of data. If the schema is correctly designed we can combine data in related tables or queries when we need to use it, rather than having to store it repeatedly. This will greatly reduce the workload when e ...
Architecture of a Database System
... to ensure the well-known “ACID” properties of transactions [30] (discussed in more detail in Section 5.1). Before accessing data, locks are acquired from a lock manager to ensure correct execution in the face of other concurrent queries. If the gate agent’s query involved updates to the database, it ...
... to ensure the well-known “ACID” properties of transactions [30] (discussed in more detail in Section 5.1). Before accessing data, locks are acquired from a lock manager to ensure correct execution in the face of other concurrent queries. If the gate agent’s query involved updates to the database, it ...