Functions of a DBMS
... The relationship among records in the database Referential Integrity Non Key Integrity Derived Conditions ...
... The relationship among records in the database Referential Integrity Non Key Integrity Derived Conditions ...
Access Tutorial 1
... the column headings and pressing the Tab key or the Enter key to move to the next column • In the first row below the field names, enter the value for each field in the first record, pressing the Tab key or the Enter key to move from field to field • After entering the value for the last field in th ...
... the column headings and pressing the Tab key or the Enter key to move to the next column • In the first row below the field names, enter the value for each field in the first record, pressing the Tab key or the Enter key to move from field to field • After entering the value for the last field in th ...
Physical Database Design - NUS School of Computing
... 21. Recommending Object Placement – Allocating databases and their objects on available hardware to achieve optimal performance. ...
... 21. Recommending Object Placement – Allocating databases and their objects on available hardware to achieve optimal performance. ...
Recoverability and Failure
... backup copies of database. • Logging facilities, which keep track of current state of transactions and database changes. • Checkpoint facility, which enables updates to database in progress to be made permanent. • Recovery manager, which allows DBMS to restore database to consistent state following ...
... backup copies of database. • Logging facilities, which keep track of current state of transactions and database changes. • Checkpoint facility, which enables updates to database in progress to be made permanent. • Recovery manager, which allows DBMS to restore database to consistent state following ...
OGEC_11g_PA
... • Code changes are installed in the privacy of a new edition. • Data changes are made safely by writing only to new columns or new tables not seen by the old edition • An editioning view exposes a different projection of a table into each edition to allow each to see just its own columns • A crossed ...
... • Code changes are installed in the privacy of a new edition. • Data changes are made safely by writing only to new columns or new tables not seen by the old edition • An editioning view exposes a different projection of a table into each edition to allow each to see just its own columns • A crossed ...
Simplicity
... • “Simplicity and straightforwardness proceed from conceptual integrity. It is better to reflect one set of design ideas than to have many good but uncoordinated ideas”. 2. Wittgenstein : • “All logical differences are big differences. In logic, we are not making subtle distinctions.” Note : program ...
... • “Simplicity and straightforwardness proceed from conceptual integrity. It is better to reflect one set of design ideas than to have many good but uncoordinated ideas”. 2. Wittgenstein : • “All logical differences are big differences. In logic, we are not making subtle distinctions.” Note : program ...
What`s New in Microsoft SQL Server 2012 for Administrators
... Fail operation options for log failures More information in audit logs Audits can be defined with filters sp_audit_write proc for custom audit ...
... Fail operation options for log failures More information in audit logs Audits can be defined with filters sp_audit_write proc for custom audit ...
Introduction to Data Warehousing
... “What were the sales volumes by region and product category for the last year?” “How did the share price of comp. manufacturers correlate with quarterly profits over the past 10 years?” “Which orders should we fill to maximize revenues?” ...
... “What were the sales volumes by region and product category for the last year?” “How did the share price of comp. manufacturers correlate with quarterly profits over the past 10 years?” “Which orders should we fill to maximize revenues?” ...
High-Precision Natural Language Interfaces: A Graph
... Develop high-precision natural-language interfaces to relational databases Semantic Interpretation Challenge Correctly identifying the database tokens referred to by a given sentence ...
... Develop high-precision natural-language interfaces to relational databases Semantic Interpretation Challenge Correctly identifying the database tokens referred to by a given sentence ...
Topics in Informatics - University of Saint Joseph
... can be generated by the DBMS (such as a globally unique identifier, or GUID, in Microsoft SQL Server). Primary keys may consist of a single attribute or multiple attributes in ...
... can be generated by the DBMS (such as a globally unique identifier, or GUID, in Microsoft SQL Server). Primary keys may consist of a single attribute or multiple attributes in ...
ENCh01 - Department of Computer Engineering
... structure may evolve as new requirements are defined. Availability of up-to-date information – very important for on-line transaction systems such as airline, hotel, car reservations. Economies of scale: by consolidating data and applications across departments wasteful overlap of resources and ...
... structure may evolve as new requirements are defined. Availability of up-to-date information – very important for on-line transaction systems such as airline, hotel, car reservations. Economies of scale: by consolidating data and applications across departments wasteful overlap of resources and ...
Multi-user DB lecture
... Database change log - contains beforeand after-images of records that have been changed Security log - sometimes maintained to alert the database administrator of security violations (attempted or successful) ...
... Database change log - contains beforeand after-images of records that have been changed Security log - sometimes maintained to alert the database administrator of security violations (attempted or successful) ...
Deck - Stefano Grazioli
... Welcome! So glad that you are here and can help us with Business Intelligence! I have so many business questions for you… (1) Who are our customers in Austin, TX? I need a list of first names, last names and IDs (2) What are the rates that we offered on our loans? Prepare a report with the loan IDs ...
... Welcome! So glad that you are here and can help us with Business Intelligence! I have so many business questions for you… (1) Who are our customers in Austin, TX? I need a list of first names, last names and IDs (2) What are the rates that we offered on our loans? Prepare a report with the loan IDs ...
DataRepresenting_by_YueLu102
... – How to represent SQL datatypes as fields – How to represent tuples as records – How to represent collections or records in blocks of memory – How to represent and store relations as collections of blocks – How to cope with record sizes – What if the size of a record changes due to updating ...
... – How to represent SQL datatypes as fields – How to represent tuples as records – How to represent collections or records in blocks of memory – How to represent and store relations as collections of blocks – How to cope with record sizes – What if the size of a record changes due to updating ...
WHERE expression - Dixie-Net
... • The resulting tables are compared – missing attributes are detected – unequal attributes are found ...
... • The resulting tables are compared – missing attributes are detected – unequal attributes are found ...
Oracle ADF for Forms Developers
... are considered vendor-specific and closed • RAD systems has their own IDE and scripting language • No single RAD dominates the J2EE development space • J2EE runtime infrastructure and frameworks evolved independently from the tools ...
... are considered vendor-specific and closed • RAD systems has their own IDE and scripting language • No single RAD dominates the J2EE development space • J2EE runtime infrastructure and frameworks evolved independently from the tools ...
Chapter 8
... • Aggregate functions (chapter 7) – Input: one single column of values (list all of the same datatype) – Output: either • One single value for an entire table; or • One single value per row, if GROUP BY clause is used ...
... • Aggregate functions (chapter 7) – Input: one single column of values (list all of the same datatype) – Output: either • One single value for an entire table; or • One single value per row, if GROUP BY clause is used ...
Lab 4 Tutorial PPT
... program can actually uniquely identify each row, because the row’s sid key is ‘hidden’ underneath, and is the real identifier. Notice also that the drop down box can only display one field. If you want multiple fields to display, you will need to use a datagrid. ...
... program can actually uniquely identify each row, because the row’s sid key is ‘hidden’ underneath, and is the real identifier. Notice also that the drop down box can only display one field. If you want multiple fields to display, you will need to use a datagrid. ...
Data Warehousing
... Product Z, the manager issuing the Store dimension, the Time dimension, and the Product dimension to describe the context of the revenue (fact). Thus for the sample report in Figure 12.3, sales region and country are dimensional attributes, “2Q, 1997” is a dimensional value. These data items establi ...
... Product Z, the manager issuing the Store dimension, the Time dimension, and the Product dimension to describe the context of the revenue (fact). Thus for the sample report in Figure 12.3, sales region and country are dimensional attributes, “2Q, 1997” is a dimensional value. These data items establi ...
10- CHAPTER (5)
... 1) Create table statement Create tables to store data by executing the SQL CREATE TABLE statement. This statement is one of the data definition language (DDL) statements, that are covered in subsequent lessons. DDL statements are a subset of SQL statements used to create, modify, or remove Oracle9i ...
... 1) Create table statement Create tables to store data by executing the SQL CREATE TABLE statement. This statement is one of the data definition language (DDL) statements, that are covered in subsequent lessons. DDL statements are a subset of SQL statements used to create, modify, or remove Oracle9i ...
05197 Oracle 1_ Data Modeling and Structured Query Language
... Data modeling forms the basis for identifying the information needs of businesses. It also provides a solid foundation for developing sophisticated critical thinking skills, useful in ANY field of continued studies. Students learn how to transform business information needs into Entity Relationship ...
... Data modeling forms the basis for identifying the information needs of businesses. It also provides a solid foundation for developing sophisticated critical thinking skills, useful in ANY field of continued studies. Students learn how to transform business information needs into Entity Relationship ...
Structure and Functions of Computer Database Systems
... The hierarchical system was followed in the 1970s by what is known as Network Database or Interrelated File System. This database system allowed interlinking between related items of data; thus each record could have more than one parent (BIM, 1986). The network system is efficient in computing; it ...
... The hierarchical system was followed in the 1970s by what is known as Network Database or Interrelated File System. This database system allowed interlinking between related items of data; thus each record could have more than one parent (BIM, 1986). The network system is efficient in computing; it ...
Databases
... Normalization is a three-step technique that places the data model into first normal form, second normal form, and third normal form. An entity is in first normal form (1NF) if there are no attributes that can have more than one value for a single instance of the entity. An entity is in second n ...
... Normalization is a three-step technique that places the data model into first normal form, second normal form, and third normal form. An entity is in first normal form (1NF) if there are no attributes that can have more than one value for a single instance of the entity. An entity is in second n ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.