ASP.NET PDF Viewer using C#, VB/NET

[x] <- res; res type type type type BddIndex = int Bdd = Bdd of BddIndex BddNode = Node of Var * BddIndex * BddIndex BddBuilder(order : Var -> Var -> int) = // The core data structures that preserve uniqueness let uniqueTab = new Dictionary<BddNode,BddIndex>() let nodeTab = new Dictionary<BddIndex,BddNode>() // Keep track of the next index let mutable nextIdx = 2 let trueIdx = 1 let falseIdx = -1.

vb.net qr code generator source code, winforms barcode, winforms code 128, vb.net gs1 128, vb.net generator ean 13 barcode, vb.net pdf417, c# remove text from pdf, c# replace text in pdf, vb.net generate data matrix code, itextsharp remove text from pdf c#,

A generic command object, exposing Connection, CommandText, CommandType, a Parameters collection, and Execute methods for sending queries to the database. A generic object that will build the Insert, Update, and Delete Commands for a DataAdapter. A generic Connection object that uses a ConnectionString and Open method to establish communication with any database server. A helper type that abstracts away the details of the syntax of a connection string for a specific provider. A generic DataAdapter for manufacturing DataTables and moving DataSet changes back to the database. A generic Parameter for sending arguments to parameterized SQL statements or to procedures defined within the database.

NAME LENGTH -------------------- --------NESTED_TABLE_ID 16 SYS_NC_ROWINFO$ 1 COMPONENT_ID 22 PART_ID 22 PART_NAME 50 PART_DESC 500 As shown, the nested table itself has two hidden internal columns: nested_table_id and sys_nc_rowinfo$. A quick select reveals the values in these two columns as follows: benchmark@ORA10G> select /*+ nested_table_get_refs */ nested_table_id, 2 sys_nc_rowinfo$ 3 from parts_nt; NESTED_TABLE_ID -------------------------------450F0E036B3D4AD39F1026235CDBA8C6 FE2F3FD8316A4EAA949A1D90A1286CFB FE2F3FD8316A4EAA949A1D90A1286CFB SYS_NC_ROWINFO$(COMPONENT_ID, PART_ID, PART_NAME, -------------------------------------------------PART_TYPE(1, 2, 'part2', 'part2 description') PART_TYPE(2, 3, 'part1', 'part1 description') PART_TYPE(2, 3, 'part2', 'part2 description') PART_TYPE(1, 4, 'part3', 'part3 description updated')

let trueNode = Node("",trueIdx,trueIdx) let falseNode = Node("",falseIdx,falseIdx) // Map indexes to nodes. Negative indexes go to their negation. The special // indexes -1 and 1 go to special true/false nodes. let idxToNode(idx) = if idx = trueIdx then trueNode elif idx = falseIdx then falseNode elif idx > 0 then nodeTab.[idx] else let (Node(v,l,r)) = nodeTab.[-idx] Node(v,-l,-r) // Map nodes to indexes. Add an entry to the table if needed. let nodeToUniqueIdx(node) = if uniqueTab.ContainsKey(node) then uniqueTab.[node] else let idx = nextIdx uniqueTab.[node] <- idx nodeTab.[idx] <- node nextIdx <- nextIdx + 1 idx // Get the canonical index for a node. Preserve the invariant that the // left-hand node of a conditional is always a positive node let mkNode(v:Var,l:BddIndex,r:BddIndex) = if l = r then l elif l >= 0 then nodeToUniqueIdx(Node(v,l,r) ) else -nodeToUniqueIdx(Node(v,-l,-r)) // Construct the BDD for a conjunction "m1 AND m2" let rec mkAnd(m1,m2) = if m1 = falseIdx or m2 = falseIdx then falseIdx elif m1 = trueIdx then m2 elif m2 = trueIdx then m1 else let Node(x,l1,r1) = idxToNode(m1) let Node(y,l2,r2) = idxToNode(m2) let v,(la,lb),(ra,rb) = match order x y with | c when c = 0 -> x,(l1,l2),(r1,r2) | c when c < 0 -> x,(l1,m2),(r1,m2) | c -> y,(m1,l2),(m1,r2) mkNode(v,mkAnd(la,lb), mkAnd(ra,rb)) // Memoize this function let mkAnd = memoize mkAnd

From the preceding select we can see that the hidden column sys_nc0000300004$ in the parent table components_nt has the same key values that the hidden column nested_table_id in the child table parts_nt. Thus the hidden column sys_nc0000300004$ in the parent table is the foreign key to the column nested_table_id in the nested child table. Also, as shown in the preceding select, the column sys_nc_rowinfo$ is another hidden column in the nested table that Oracle uses to internally reference the entire nested table row as a single object. We can see that behind the scenes Oracle internally works on two different tables (a parent table and a child table) with an internally generated foreign key that connects the two tables. This mitigates the shortcoming of not being able to create a referential integrity constraint on nested tables that we encountered earlier. Let s look at the constraints and indexes that Oracle creates for us internally on the parent table components_nt and the child table parts_nt: benchmark@ORA10G> select c.table_name, 2 c.constraint_name, 3 case 4 when c.constraint_type = 'P' 5 then 'Primary Key' 6 when c.constraint_type = 'U' 7 then 'Unique Key' 8 end constraint_type_desc, 9 i.index_name, i.column_name 10 from all_ind_columns i, user_constraints c 11 where i.index_name = c.index_name 12 and c.table_name in( 'COMPONENTS_NT', 'PARTS_NT' );