Chapter 1:
... Also describes the way in which you can query it to access information about the database structure ...
... Also describes the way in which you can query it to access information about the database structure ...
Chapter 3
... (Structured Query Language): language for manipulating relational databases Three classes of statements: definition, query, and manipulation You create objects with the CREATE statement You perform queries with the SELECT statement the condition is part of the WHERE clause Concepts of Databa ...
... (Structured Query Language): language for manipulating relational databases Three classes of statements: definition, query, and manipulation You create objects with the CREATE statement You perform queries with the SELECT statement the condition is part of the WHERE clause Concepts of Databa ...
Chapter 12: Indexing and Hashing
... Versão modificada de Database System Concepts, 5th Ed. ©Silberschatz, Korth and Sudarshan ...
... Versão modificada de Database System Concepts, 5th Ed. ©Silberschatz, Korth and Sudarshan ...
Chapter 7: Relational Database Design
... may not yield best overall algorithm. E.g. merge-join may be costlier than hash-join, but may provide a sorted output which reduces the cost for an ...
... may not yield best overall algorithm. E.g. merge-join may be costlier than hash-join, but may provide a sorted output which reduces the cost for an ...
PPT - UCLA Computer Science
... table to refer to temporary tables (called transition tables) containing the affected rows ...
... table to refer to temporary tables (called transition tables) containing the affected rows ...
Amateur girl topless shopping
... '/home/oracle/oradata/LVMDB/temp/temp01.dbf' size 2 G, '/home/oracle/oradata/LVMDB/temp/temp02.dbf' size 2 G, '/home/oracle/oradata/LVMDB/temp/temp03.dbf' size 2 G, '/home/oracle/oradata/LVMDB/temp/temp04.dbf' size 2 G extent management local uniform size 64k undo tablespace undo ...
... '/home/oracle/oradata/LVMDB/temp/temp01.dbf' size 2 G, '/home/oracle/oradata/LVMDB/temp/temp02.dbf' size 2 G, '/home/oracle/oradata/LVMDB/temp/temp03.dbf' size 2 G, '/home/oracle/oradata/LVMDB/temp/temp04.dbf' size 2 G extent management local uniform size 64k undo tablespace undo ...
Chapter 3 - Relational Database Model
... • Uses one 2-column table as the dividend and one singlecolumn table as the divisor • The output is a single column that contains all values from the second column of the dividend (LOC) that ate associated with every row in the divisor ...
... • Uses one 2-column table as the dividend and one singlecolumn table as the divisor • The output is a single column that contains all values from the second column of the dividend (LOC) that ate associated with every row in the divisor ...
foreign key.
... 6. The order of the columns is unimportant. 7. The order of the rows is unimportant. 8. No two rows may be identical. KROENKE and AUER - DATABASE CONCEPTS (7th Edition, Global Edition) Copyright © 2015 Pearson Education, Ltd. ...
... 6. The order of the columns is unimportant. 7. The order of the rows is unimportant. 8. No two rows may be identical. KROENKE and AUER - DATABASE CONCEPTS (7th Edition, Global Edition) Copyright © 2015 Pearson Education, Ltd. ...
Chapter 27: Mollusks and Segmented Worms
... One-shelled mollusks The largest class of mollusks is Gastropoda, or the stomach-footed mollusks. The name comes from the way the animal’s large foot is positioned under the rest of its body. Most species of gastropods have a shell. Other gastropod species, such as slugs, have no shell. Shelled gast ...
... One-shelled mollusks The largest class of mollusks is Gastropoda, or the stomach-footed mollusks. The name comes from the way the animal’s large foot is positioned under the rest of its body. Most species of gastropods have a shell. Other gastropod species, such as slugs, have no shell. Shelled gast ...
Phylum Mollusca pwrpnt
... Some examples are clams, oysters, and scallops. Most bivalves are marine. They have no distinct head or radula. Most use their large, muscular foot for burrowing in the mud or sand at the bottom of the ocean. • A ligament, like a hinge, connects their two shells (valves) and strong muscles allow the ...
... Some examples are clams, oysters, and scallops. Most bivalves are marine. They have no distinct head or radula. Most use their large, muscular foot for burrowing in the mud or sand at the bottom of the ocean. • A ligament, like a hinge, connects their two shells (valves) and strong muscles allow the ...
Mollusks and Annelids
... The class Gastropoda contains about 40,000 described species of snails, slugs, and similar animals. This class is primarily a marine group, but it also contains many freshwater and terrestrial mollusks (figure 45.8). Most gastropods have a shell, but some, like slugs and nudibranchs, have lost their ...
... The class Gastropoda contains about 40,000 described species of snails, slugs, and similar animals. This class is primarily a marine group, but it also contains many freshwater and terrestrial mollusks (figure 45.8). Most gastropods have a shell, but some, like slugs and nudibranchs, have lost their ...
Document
... > TSYS is spun-off from its parent company, Synovus, to become a fully independent company. > TSYS acquires a Silicon Valley technology firm to simplify the acceptance of many new forms of payment. > TSYS adds new data centre in Okinawa, Japan garnering more than 600,000 accounts and three new clien ...
... > TSYS is spun-off from its parent company, Synovus, to become a fully independent company. > TSYS acquires a Silicon Valley technology firm to simplify the acceptance of many new forms of payment. > TSYS adds new data centre in Okinawa, Japan garnering more than 600,000 accounts and three new clien ...
Document
... Projection is a more difficult operation l R = (A,B), and r(R) = { (a,2), (a,3)} l A(r) has a single tuple (a). l If we delete the tuple (a,2) from r, we should not delete the tuple (a) from A(r), but if we then delete (a,3) as well, we should delete the ...
... Projection is a more difficult operation l R = (A,B), and r(R) = { (a,2), (a,3)} l A(r) has a single tuple (a). l If we delete the tuple (a,2) from r, we should not delete the tuple (a) from A(r), but if we then delete (a,3) as well, we should delete the ...
File - Malak AL
... • Orderly arrangement to logically access rows in a table • Is composed of an index key & set of pointers • Index key – Index’s reference point – Points to data location identified by the key • Unique index – Index in which the index key can have only one pointer value (row) associated with it • A t ...
... • Orderly arrangement to logically access rows in a table • Is composed of an index key & set of pointers • Index key – Index’s reference point – Points to data location identified by the key • Unique index – Index in which the index key can have only one pointer value (row) associated with it • A t ...
Chapter 3
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
Lecture 3 - cda college
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
Chapter 3
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
9781111969608_PPT_ch03
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
... Codd’s Relational Database Rules • In 1985, Codd published a list of 12 rules to define a relational database system – Products marketed as “relational” that did not meet minimum relational standards ...
Document
... Needed since operations may get re-executed during recovery When recovering after failure: Transaction Ti needs to be undone if the log contains the record, but does not contain the record .
...
... Needed since operations may get re-executed during recovery When recovering after failure: Transaction Ti needs to be undone if the log contains the record
Chapter 7: Relational Database Design
... Multilevel insertion (as well as deletion) algorithms are simple ...
... Multilevel insertion (as well as deletion) algorithms are simple ...
Pratt and Adamski Chapter 6
... standard. Let’s start by examining how to treat 1:1 relationships ...
... standard. Let’s start by examining how to treat 1:1 relationships ...
Chapter 4
... • Cardinality – Expresses minimum and maximum number of entity occurrences associated with one occurrence of related entity ...
... • Cardinality – Expresses minimum and maximum number of entity occurrences associated with one occurrence of related entity ...