Elmasri_6e_Ch01.ppt
... A Brief History of Database Applications (cont'd.) Object-oriented applications and the need for more complex databases ...
... A Brief History of Database Applications (cont'd.) Object-oriented applications and the need for more complex databases ...
Introduction to MS Access - San Francisco State University
... – Create a new table: Create/Table Design – Open a table: • Double click the table name ...
... – Create a new table: Create/Table Design – Open a table: • Double click the table name ...
Slides
... They can be combined but decidability is subtle (see CARIN, [Levy and Rousset, 1996]). ...
... They can be combined but decidability is subtle (see CARIN, [Levy and Rousset, 1996]). ...
Database Processing
... Before mid-1960s, only sequential file processing using magnetic tape was possible In mid-1960s, disk storage enabled hierarchical and network database – IBM’s DL/I (Data Language One) – CODAYSL’s DBTG (Data Base Task Group) model the basis of current DBMSs ...
... Before mid-1960s, only sequential file processing using magnetic tape was possible In mid-1960s, disk storage enabled hierarchical and network database – IBM’s DL/I (Data Language One) – CODAYSL’s DBTG (Data Base Task Group) model the basis of current DBMSs ...
Chapter 15
... tool for corporate data management • DBMS has impact on organization’s managerial, technological, and cultural framework • Data administration function evolved from centralized electronic data processing – Applications began to share common repository ...
... tool for corporate data management • DBMS has impact on organization’s managerial, technological, and cultural framework • Data administration function evolved from centralized electronic data processing – Applications began to share common repository ...
SQL Log File: Spelunking
... corrupt it?" and here is what he said: "In theory, if it was perfectly configured, it won't, but that's rarely true. People leave write caching on at the RAID controller, for example. When you pull the plug, the data is (hopefully) written to non-volatile RAM, and then when power comes back, it fini ...
... corrupt it?" and here is what he said: "In theory, if it was perfectly configured, it won't, but that's rarely true. People leave write caching on at the RAID controller, for example. When you pull the plug, the data is (hopefully) written to non-volatile RAM, and then when power comes back, it fini ...
Pass4sure 190
... A. Designers can enable SCT through the properties of the New Database Info tab. B. Databases that use an SCT-enabled template do not need to store their design elements, but they must retrieve them from the template instead. C. SCT reduces the drain on server resources, storage, and memory. D. A da ...
... A. Designers can enable SCT through the properties of the New Database Info tab. B. Databases that use an SCT-enabled template do not need to store their design elements, but they must retrieve them from the template instead. C. SCT reduces the drain on server resources, storage, and memory. D. A da ...
Practical Database Design and Tuning
... An Overview of Database Tuning in Relational Systems Tuning the Database Design (contd.) • Possible changes to the database design →Existing tables may be joined (denormalized) because certain attributes from two or more tables are frequently needed together. →For the given set of tables, there m ...
... An Overview of Database Tuning in Relational Systems Tuning the Database Design (contd.) • Possible changes to the database design →Existing tables may be joined (denormalized) because certain attributes from two or more tables are frequently needed together. →For the given set of tables, there m ...
PHP II
... website, and transferred (in real time) for storage, or for manipulation. Server-side programming languages such as PHP act as an intermediary between the client (browser), and the database. PHP enables the design of the presentation component of a web page to be created in HTML (as templates), ...
... website, and transferred (in real time) for storage, or for manipulation. Server-side programming languages such as PHP act as an intermediary between the client (browser), and the database. PHP enables the design of the presentation component of a web page to be created in HTML (as templates), ...
data model
... Self-describing nature of a database system A DBMS catalog stores the description of the database. The description is called meta-data. This allows the DBMS software to work with different databases A traditional file processing can work with only one specific database. The description of the da ...
... Self-describing nature of a database system A DBMS catalog stores the description of the database. The description is called meta-data. This allows the DBMS software to work with different databases A traditional file processing can work with only one specific database. The description of the da ...
a comparison of the relational database model and the associative
... labels & values are attributes).” In addition, he notes that the ADBMS allows for data warehousing without tables and that data can be imported directly from existing databases into an associative database model and the original information set. As noted earlier in this paper, software based on the ...
... labels & values are attributes).” In addition, he notes that the ADBMS allows for data warehousing without tables and that data can be imported directly from existing databases into an associative database model and the original information set. As noted earlier in this paper, software based on the ...
Introduction to Relational Databases
... The concept of relational databases was first described by Edgar Frank Codd (almost exclusively referenced as E. F. Codd in technical literature) in the IBM research report RJ599, dated August 19th, 1969.1 However, the article that is usually considered the cornerstone of this technology is "A Relat ...
... The concept of relational databases was first described by Edgar Frank Codd (almost exclusively referenced as E. F. Codd in technical literature) in the IBM research report RJ599, dated August 19th, 1969.1 However, the article that is usually considered the cornerstone of this technology is "A Relat ...
Managing Data Resources
... Hierarchical data model represents data in a treelike structure. A parent record (segment) can have more than one child, but a child can have only one parent (one-to-many relationship). Example: IBM’s IMS Pointers are used to link the segments together. ...
... Hierarchical data model represents data in a treelike structure. A parent record (segment) can have more than one child, but a child can have only one parent (one-to-many relationship). Example: IBM’s IMS Pointers are used to link the segments together. ...
CS 3743 Introduction to Database Systems
... “regurgitate what was in the text” type of question. This is a concepts course and as such, concepts will be tested. Comprehending a concept entails “translating”, “interpreting”, and “extrapolating.” What this means in plain English is that for many test questions, you will not have seen something ...
... “regurgitate what was in the text” type of question. This is a concepts course and as such, concepts will be tested. Comprehending a concept entails “translating”, “interpreting”, and “extrapolating.” What this means in plain English is that for many test questions, you will not have seen something ...
Data and database administration
... Emphasis on integration and coordination of metadata/data across many data sources Specific roles: ...
... Emphasis on integration and coordination of metadata/data across many data sources Specific roles: ...
Slides
... • SQL Server supports the SQL-92 standard • The IDENTITY keyword implements a new constraint for surrogate keys: – IDENTITY (m, n) creates a surrogate key with an Identity Seed of m and an Identity Increment of n: ...
... • SQL Server supports the SQL-92 standard • The IDENTITY keyword implements a new constraint for surrogate keys: – IDENTITY (m, n) creates a surrogate key with an Identity Seed of m and an Identity Increment of n: ...
Oracle Enterprise Manager
... • Using the Server Manager Line Mode • Identifying administration applications supplied with the Oracle Enterprise Manager ...
... • Using the Server Manager Line Mode • Identifying administration applications supplied with the Oracle Enterprise Manager ...
Introduction to Database Management - gozips.uakron.edu
... Relatively fast approach (as long as data is accessed from top to bottom) Can provide some difficulties in data search, especially items in the bottom or middle of the hierarchy ...
... Relatively fast approach (as long as data is accessed from top to bottom) Can provide some difficulties in data search, especially items in the bottom or middle of the hierarchy ...
2nd Semester
... views – SQL – basic structure – set operations – aggregate functions – Nested Sub queries – derived relations, views. ...
... views – SQL – basic structure – set operations – aggregate functions – Nested Sub queries – derived relations, views. ...